<?php /** * SimplePie * * A PHP-Based RSS and Atom Feed Framework. * Takes the hard work out of managing a complete RSS/Atom solution. * * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * * Neither the name of the SimplePie Team nor the names of its contributors may be used * to endorse or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * @package SimplePie * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue * @author Ryan Parman * @author Sam Sneddon * @author Ryan McCue * @link http://simplepie.org/ SimplePie * @license http://www.opensource.org/licenses/bsd-license.php BSD License */ namespace SimplePie; use InvalidArgumentException; use Psr\SimpleCache\CacheInterface; use SimplePie\Cache\Base; use SimplePie\Cache\BaseDataCache; use SimplePie\Cache\CallableNameFilter; use SimplePie\Cache\DataCache; use SimplePie\Cache\NameFilter; use SimplePie\Cache\Psr16; use SimplePie\Content\Type\Sniffer; /** * SimplePie * * @package SimplePie * @subpackage API */ class SimplePie { /** * SimplePie Name */ public const NAME = 'SimplePie'; /** * SimplePie Version */ public const VERSION = '1.8.0'; /** * SimplePie Website URL */ public const URL = 'http://simplepie.org'; /** * SimplePie Linkback */ public const LINKBACK = '<a href="' . self::URL . '" title="' . self::NAME . ' ' . self::VERSION . '">' . self::NAME . '</a>'; /** * No Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_NONE = 0; /** * Feed Link Element Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_AUTODISCOVERY = 1; /** * Local Feed Extension Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_LOCAL_EXTENSION = 2; /** * Local Feed Body Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_LOCAL_BODY = 4; /** * Remote Feed Extension Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_REMOTE_EXTENSION = 8; /** * Remote Feed Body Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_REMOTE_BODY = 16; /** * All Feed Autodiscovery * @see SimplePie::set_autodiscovery_level() */ public const LOCATOR_ALL = 31; /** * No known feed type */ public const TYPE_NONE = 0; /** * RSS 0.90 */ public const TYPE_RSS_090 = 1; /** * RSS 0.91 (Netscape) */ public const TYPE_RSS_091_NETSCAPE = 2; /** * RSS 0.91 (Userland) */ public const TYPE_RSS_091_USERLAND = 4; /** * RSS 0.91 (both Netscape and Userland) */ public const TYPE_RSS_091 = 6; /** * RSS 0.92 */ public const TYPE_RSS_092 = 8; /** * RSS 0.93 */ public const TYPE_RSS_093 = 16; /** * RSS 0.94 */ public const TYPE_RSS_094 = 32; /** * RSS 1.0 */ public const TYPE_RSS_10 = 64; /** * RSS 2.0 */ public const TYPE_RSS_20 = 128; /** * RDF-based RSS */ public const TYPE_RSS_RDF = 65; /** * Non-RDF-based RSS (truly intended as syndication format) */ public const TYPE_RSS_SYNDICATION = 190; /** * All RSS */ public const TYPE_RSS_ALL = 255; /** * Atom 0.3 */ public const TYPE_ATOM_03 = 256; /** * Atom 1.0 */ public const TYPE_ATOM_10 = 512; /** * All Atom */ public const TYPE_ATOM_ALL = 768; /** * All feed types */ public const TYPE_ALL = 1023; /** * No construct */ public const CONSTRUCT_NONE = 0; /** * Text construct */ public const CONSTRUCT_TEXT = 1; /** * HTML construct */ public const CONSTRUCT_HTML = 2; /** * XHTML construct */ public const CONSTRUCT_XHTML = 4; /** * base64-encoded construct */ public const CONSTRUCT_BASE64 = 8; /** * IRI construct */ public const CONSTRUCT_IRI = 16; /** * A construct that might be HTML */ public const CONSTRUCT_MAYBE_HTML = 32; /** * All constructs */ public const CONSTRUCT_ALL = 63; /** * Don't change case */ public const SAME_CASE = 1; /** * Change to lowercase */ public const LOWERCASE = 2; /** * Change to uppercase */ public const UPPERCASE = 4; /** * PCRE for HTML attributes */ public const PCRE_HTML_ATTRIBUTE = '((?:[\x09\x0A\x0B\x0C\x0D\x20]+[^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"(?:[^"]*)"|\'(?:[^\']*)\'|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?)*)[\x09\x0A\x0B\x0C\x0D\x20]*'; /** * PCRE for XML attributes */ public const PCRE_XML_ATTRIBUTE = '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*'; /** * XML Namespace */ public const NAMESPACE_XML = 'http://www.w3.org/XML/1998/namespace'; /** * Atom 1.0 Namespace */ public const NAMESPACE_ATOM_10 = 'http://www.w3.org/2005/Atom'; /** * Atom 0.3 Namespace */ public const NAMESPACE_ATOM_03 = 'http://purl.org/atom/ns#'; /** * RDF Namespace */ public const NAMESPACE_RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'; /** * RSS 0.90 Namespace */ public const NAMESPACE_RSS_090 = 'http://my.netscape.com/rdf/simple/0.9/'; /** * RSS 1.0 Namespace */ public const NAMESPACE_RSS_10 = 'http://purl.org/rss/1.0/'; /** * RSS 1.0 Content Module Namespace */ public const NAMESPACE_RSS_10_MODULES_CONTENT = 'http://purl.org/rss/1.0/modules/content/'; /** * RSS 2.0 Namespace * (Stupid, I know, but I'm certain it will confuse people less with support.) */ public const NAMESPACE_RSS_20 = ''; /** * DC 1.0 Namespace */ public const NAMESPACE_DC_10 = 'http://purl.org/dc/elements/1.0/'; /** * DC 1.1 Namespace */ public const NAMESPACE_DC_11 = 'http://purl.org/dc/elements/1.1/'; /** * W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace */ public const NAMESPACE_W3C_BASIC_GEO = 'http://www.w3.org/2003/01/geo/wgs84_pos#'; /** * GeoRSS Namespace */ public const NAMESPACE_GEORSS = 'http://www.georss.org/georss'; /** * Media RSS Namespace */ public const NAMESPACE_MEDIARSS = 'http://search.yahoo.com/mrss/'; /** * Wrong Media RSS Namespace. Caused by a long-standing typo in the spec. */ public const NAMESPACE_MEDIARSS_WRONG = 'http://search.yahoo.com/mrss'; /** * Wrong Media RSS Namespace #2. New namespace introduced in Media RSS 1.5. */ public const NAMESPACE_MEDIARSS_WRONG2 = 'http://video.search.yahoo.com/mrss'; /** * Wrong Media RSS Namespace #3. A possible typo of the Media RSS 1.5 namespace. */ public const NAMESPACE_MEDIARSS_WRONG3 = 'http://video.search.yahoo.com/mrss/'; /** * Wrong Media RSS Namespace #4. New spec location after the RSS Advisory Board takes it over, but not a valid namespace. */ public const NAMESPACE_MEDIARSS_WRONG4 = 'http://www.rssboard.org/media-rss'; /** * Wrong Media RSS Namespace #5. A possible typo of the RSS Advisory Board URL. */ public const NAMESPACE_MEDIARSS_WRONG5 = 'http://www.rssboard.org/media-rss/'; /** * iTunes RSS Namespace */ public const NAMESPACE_ITUNES = 'http://www.itunes.com/dtds/podcast-1.0.dtd'; /** * XHTML Namespace */ public const NAMESPACE_XHTML = 'http://www.w3.org/1999/xhtml'; /** * IANA Link Relations Registry */ public const IANA_LINK_RELATIONS_REGISTRY = 'http://www.iana.org/assignments/relation/'; /** * No file source */ public const FILE_SOURCE_NONE = 0; /** * Remote file source */ public const FILE_SOURCE_REMOTE = 1; /** * Local file source */ public const FILE_SOURCE_LOCAL = 2; /** * fsockopen() file source */ public const FILE_SOURCE_FSOCKOPEN = 4; /** * cURL file source */ public const FILE_SOURCE_CURL = 8; /** * file_get_contents() file source */ public const FILE_SOURCE_FILE_GET_CONTENTS = 16; /** * @var array Raw data * @access private */ public $data = []; /** * @var mixed Error string * @access private */ public $error; /** * @var int HTTP status code * @see SimplePie::status_code() * @access private */ public $status_code = 0; /** * @var object Instance of \SimplePie\Sanitize (or other class) * @see SimplePie::set_sanitize_class() * @access private */ public $sanitize; /** * @var string SimplePie Useragent * @see SimplePie::set_useragent() * @access private */ public $useragent = ''; /** * @var string Feed URL * @see SimplePie::set_feed_url() * @access private */ public $feed_url; /** * @var string Original feed URL, or new feed URL iff HTTP 301 Moved Permanently * @see SimplePie::subscribe_url() * @access private */ public $permanent_url = null; /** * @var object Instance of \SimplePie\File to use as a feed * @see SimplePie::set_file() * @access private */ public $file; /** * @var string Raw feed data * @see SimplePie::set_raw_data() * @access private */ public $raw_data; /** * @var int Timeout for fetching remote files * @see SimplePie::set_timeout() * @access private */ public $timeout = 10; /** * @var array Custom curl options * @see SimplePie::set_curl_options() * @access private */ public $curl_options = []; /** * @var bool Forces fsockopen() to be used for remote files instead * of cURL, even if a new enough version is installed * @see SimplePie::force_fsockopen() * @access private */ public $force_fsockopen = false; /** * @var bool Force the given data/URL to be treated as a feed no matter what * it appears like * @see SimplePie::force_feed() * @access private */ public $force_feed = false; /** * @var bool Enable/Disable Caching * @see SimplePie::enable_cache() * @access private */ private $enable_cache = true; /** * @var DataCache|null * @see SimplePie::set_cache() */ private $cache = null; /** * @var NameFilter * @see SimplePie::set_cache_namefilter() */ private $cache_namefilter; /** * @var bool Force SimplePie to fallback to expired cache, if enabled, * when feed is unavailable. * @see SimplePie::force_cache_fallback() * @access private */ public $force_cache_fallback = false; /** * @var int Cache duration (in seconds) * @see SimplePie::set_cache_duration() * @access private */ public $cache_duration = 3600; /** * @var int Auto-discovery cache duration (in seconds) * @see SimplePie::set_autodiscovery_cache_duration() * @access private */ public $autodiscovery_cache_duration = 604800; // 7 Days. /** * @var string Cache location (relative to executing script) * @see SimplePie::set_cache_location() * @access private */ public $cache_location = './cache'; /** * @var string Function that creates the cache filename * @see SimplePie::set_cache_name_function() * @access private */ public $cache_name_function = 'md5'; /** * @var bool Reorder feed by date descending * @see SimplePie::enable_order_by_date() * @access private */ public $order_by_date = true; /** * @var mixed Force input encoding to be set to the follow value * (false, or anything type-cast to false, disables this feature) * @see SimplePie::set_input_encoding() * @access private */ public $input_encoding = false; /** * @var int Feed Autodiscovery Level * @see SimplePie::set_autodiscovery_level() * @access private */ public $autodiscovery = self::LOCATOR_ALL; /** * Class registry object * * @var \SimplePie\Registry */ public $registry; /** * @var int Maximum number of feeds to check with autodiscovery * @see SimplePie::set_max_checked_feeds() * @access private */ public $max_checked_feeds = 10; /** * @var array All the feeds found during the autodiscovery process * @see SimplePie::get_all_discovered_feeds() * @access private */ public $all_discovered_feeds = []; /** * @var string Web-accessible path to the handler_image.php file. * @see SimplePie::set_image_handler() * @access private */ public $image_handler = ''; /** * @var array Stores the URLs when multiple feeds are being initialized. * @see SimplePie::set_feed_url() * @access private */ public $multifeed_url = []; /** * @var array Stores SimplePie objects when multiple feeds initialized. * @access private */ public $multifeed_objects = []; /** * @var array Stores the get_object_vars() array for use with multifeeds. * @see SimplePie::set_feed_url() * @access private */ public $config_settings = null; /** * @var integer Stores the number of items to return per-feed with multifeeds. * @see SimplePie::set_item_limit() * @access private */ public $item_limit = 0; /** * @var bool Stores if last-modified and/or etag headers were sent with the * request when checking a feed. */ public $check_modified = false; /** * @var array Stores the default attributes to be stripped by strip_attributes(). * @see SimplePie::strip_attributes() * @access private */ public $strip_attributes = ['bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc']; /** * @var array Stores the default attributes to add to different tags by add_attributes(). * @see SimplePie::add_attributes() * @access private */ public $add_attributes = ['audio' => ['preload' => 'none'], 'iframe' => ['sandbox' => 'allow-scripts allow-same-origin'], 'video' => ['preload' => 'none']]; /** * @var array Stores the default tags to be stripped by strip_htmltags(). * @see SimplePie::strip_htmltags() * @access private */ public $strip_htmltags = ['base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style']; /** * @var array Stores the default attributes to be renamed by rename_attributes(). * @see SimplePie::rename_attributes() * @access private */ public $rename_attributes = []; /** * @var bool Should we throw exceptions, or use the old-style error property? * @access private */ public $enable_exceptions = false; /** * The SimplePie class contains feed level data and options * * To use SimplePie, create the SimplePie object with no parameters. You can * then set configuration options using the provided methods. After setting * them, you must initialise the feed using $feed->init(). At that point the * object's methods and properties will be available to you. * * Previously, it was possible to pass in the feed URL along with cache * options directly into the constructor. This has been removed as of 1.3 as * it caused a lot of confusion. * * @since 1.0 Preview Release */ public function __construct() { if (version_compare(PHP_VERSION, '7.2', '<')) { exit('Please upgrade to PHP 7.2 or newer.'); } $this->set_useragent(); $this->set_cache_namefilter(new CallableNameFilter($this->cache_name_function)); // Other objects, instances created here so we can set options on them $this->sanitize = new \SimplePie\Sanitize(); $this->registry = new \SimplePie\Registry(); if (func_num_args() > 0) { trigger_error('Passing parameters to the constructor is no longer supported. Please use set_feed_url(), set_cache_location(), and set_cache_duration() directly.', \E_USER_DEPRECATED); $args = func_get_args(); switch (count($args)) { case 3: $this->set_cache_duration($args[2]); // no break case 2: $this->set_cache_location($args[1]); // no break case 1: $this->set_feed_url($args[0]); $this->init(); } } } /** * Used for converting object to a string */ public function __toString() { return md5(serialize($this->data)); } /** * Remove items that link back to this before destroying this object */ public function __destruct() { if (!gc_enabled()) { if (!empty($this->data['items'])) { foreach ($this->data['items'] as $item) { $item->__destruct(); } unset($item, $this->data['items']); } if (!empty($this->data['ordered_items'])) { foreach ($this->data['ordered_items'] as $item) { $item->__destruct(); } unset($item, $this->data['ordered_items']); } } } /** * Force the given data/URL to be treated as a feed * * This tells SimplePie to ignore the content-type provided by the server. * Be careful when using this option, as it will also disable autodiscovery. * * @since 1.1 * @param bool $enable Force the given data/URL to be treated as a feed */ public function force_feed($enable = false) { $this->force_feed = (bool) $enable; } /** * Set the URL of the feed you want to parse * * This allows you to enter the URL of the feed you want to parse, or the * website you want to try to use auto-discovery on. This takes priority * over any set raw data. * * You can set multiple feeds to mash together by passing an array instead * of a string for the $url. Remember that with each additional feed comes * additional processing and resources. * * @since 1.0 Preview Release * @see set_raw_data() * @param string|array $url This is the URL (or array of URLs) that you want to parse. */ public function set_feed_url($url) { $this->multifeed_url = []; if (is_array($url)) { foreach ($url as $value) { $this->multifeed_url[] = $this->registry->call(Misc::class, 'fix_protocol', [$value, 1]); } } else { $this->feed_url = $this->registry->call(Misc::class, 'fix_protocol', [$url, 1]); $this->permanent_url = $this->feed_url; } } /** * Set an instance of {@see \SimplePie\File} to use as a feed * * @param \SimplePie\File &$file * @return bool True on success, false on failure */ public function set_file(&$file) { if ($file instanceof \SimplePie\File) { $this->feed_url = $file->url; $this->permanent_url = $this->feed_url; $this->file = &$file; return true; } return false; } /** * Set the raw XML data to parse * * Allows you to use a string of RSS/Atom data instead of a remote feed. * * If you have a feed available as a string in PHP, you can tell SimplePie * to parse that data string instead of a remote feed. Any set feed URL * takes precedence. * * @since 1.0 Beta 3 * @param string $data RSS or Atom data as a string. * @see set_feed_url() */ public function set_raw_data($data) { $this->raw_data = $data; } /** * Set the default timeout for fetching remote feeds * * This allows you to change the maximum time the feed's server to respond * and send the feed back. * * @since 1.0 Beta 3 * @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed. */ public function set_timeout($timeout = 10) { $this->timeout = (int) $timeout; } /** * Set custom curl options * * This allows you to change default curl options * * @since 1.0 Beta 3 * @param array $curl_options Curl options to add to default settings */ public function set_curl_options(array $curl_options = []) { $this->curl_options = $curl_options; } /** * Force SimplePie to use fsockopen() instead of cURL * * @since 1.0 Beta 3 * @param bool $enable Force fsockopen() to be used */ public function force_fsockopen($enable = false) { $this->force_fsockopen = (bool) $enable; } /** * Enable/disable caching in SimplePie. * * This option allows you to disable caching all-together in SimplePie. * However, disabling the cache can lead to longer load times. * * @since 1.0 Preview Release * @param bool $enable Enable caching */ public function enable_cache($enable = true) { $this->enable_cache = (bool) $enable; } /** * Set a PSR-16 implementation as cache * * @param CacheInterface $psr16cache The PSR-16 cache implementation * * @return void */ public function set_cache(CacheInterface $cache) { $this->cache = new Psr16($cache); } /** * SimplePie to continue to fall back to expired cache, if enabled, when * feed is unavailable. * * This tells SimplePie to ignore any file errors and fall back to cache * instead. This only works if caching is enabled and cached content * still exists. * * @deprecated since SimplePie 1.8.0, expired cache will not be used anymore. * * @param bool $enable Force use of cache on fail. */ public function force_cache_fallback($enable = false) { // @trigger_error(sprintf('SimplePie\SimplePie::force_cache_fallback() is deprecated since SimplePie 1.8.0, expired cache will not be used anymore.'), \E_USER_DEPRECATED); $this->force_cache_fallback = (bool) $enable; } /** * Set the length of time (in seconds) that the contents of a feed will be * cached * * @param int $seconds The feed content cache duration */ public function set_cache_duration($seconds = 3600) { $this->cache_duration = (int) $seconds; } /** * Set the length of time (in seconds) that the autodiscovered feed URL will * be cached * * @param int $seconds The autodiscovered feed URL cache duration. */ public function set_autodiscovery_cache_duration($seconds = 604800) { $this->autodiscovery_cache_duration = (int) $seconds; } /** * Set the file system location where the cached files should be stored * * @deprecated since SimplePie 1.8.0, use \SimplePie\SimplePie::set_cache() instead. * * @param string $location The file system location. */ public function set_cache_location($location = './cache') { // @trigger_error(sprintf('SimplePie\SimplePie::set_cache_location() is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache()" instead.'), \E_USER_DEPRECATED); $this->cache_location = (string) $location; } /** * Return the filename (i.e. hash, without path and without extension) of the file to cache a given URL. * * @param string $url The URL of the feed to be cached. * @return string A filename (i.e. hash, without path and without extension). */ public function get_cache_filename($url) { // Append custom parameters to the URL to avoid cache pollution in case of multiple calls with different parameters. $url .= $this->force_feed ? '#force_feed' : ''; $options = []; if ($this->timeout != 10) { $options[CURLOPT_TIMEOUT] = $this->timeout; } if ($this->useragent !== \SimplePie\Misc::get_default_useragent()) { $options[CURLOPT_USERAGENT] = $this->useragent; } if (!empty($this->curl_options)) { foreach ($this->curl_options as $k => $v) { $options[$k] = $v; } } if (!empty($options)) { ksort($options); $url .= '#' . urlencode(var_export($options, true)); } return $this->cache_namefilter->filter($url); } /** * Set whether feed items should be sorted into reverse chronological order * * @param bool $enable Sort as reverse chronological order. */ public function enable_order_by_date($enable = true) { $this->order_by_date = (bool) $enable; } /** * Set the character encoding used to parse the feed * * This overrides the encoding reported by the feed, however it will fall * back to the normal encoding detection if the override fails * * @param string $encoding Character encoding */ public function set_input_encoding($encoding = false) { if ($encoding) { $this->input_encoding = (string) $encoding; } else { $this->input_encoding = false; } } /** * Set how much feed autodiscovery to do * * @see \SimplePie\SimplePie::LOCATOR_NONE * @see \SimplePie\SimplePie::LOCATOR_AUTODISCOVERY * @see \SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION * @see \SimplePie\SimplePie::LOCATOR_LOCAL_BODY * @see \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION * @see \SimplePie\SimplePie::LOCATOR_REMOTE_BODY * @see \SimplePie\SimplePie::LOCATOR_ALL * @param int $level Feed Autodiscovery Level (level can be a combination of the above constants, see bitwise OR operator) */ public function set_autodiscovery_level($level = self::LOCATOR_ALL) { $this->autodiscovery = (int) $level; } /** * Get the class registry * * Use this to override SimplePie's default classes * @see \SimplePie\Registry * * @return Registry */ public function &get_registry() { return $this->registry; } /** * Set which class SimplePie uses for caching * * @deprecated since SimplePie 1.3, use {@see set_cache()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_cache_class($class = Cache::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::set_cache()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Cache::class, $class, true); } /** * Set which class SimplePie uses for auto-discovery * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_locator_class($class = Locator::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Locator::class, $class, true); } /** * Set which class SimplePie uses for XML parsing * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_parser_class($class = Parser::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Parser::class, $class, true); } /** * Set which class SimplePie uses for remote file fetching * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_file_class($class = File::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(File::class, $class, true); } /** * Set which class SimplePie uses for data sanitization * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_sanitize_class($class = Sanitize::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Sanitize::class, $class, true); } /** * Set which class SimplePie uses for handling feed items * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_item_class($class = Item::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Item::class, $class, true); } /** * Set which class SimplePie uses for handling author data * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_author_class($class = Author::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Author::class, $class, true); } /** * Set which class SimplePie uses for handling category data * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_category_class($class = Category::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Category::class, $class, true); } /** * Set which class SimplePie uses for feed enclosures * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_enclosure_class($class = Enclosure::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Enclosure::class, $class, true); } /** * Set which class SimplePie uses for `<media:text>` captions * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_caption_class($class = Caption::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Caption::class, $class, true); } /** * Set which class SimplePie uses for `<media:copyright>` * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_copyright_class($class = Copyright::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Copyright::class, $class, true); } /** * Set which class SimplePie uses for `<media:credit>` * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_credit_class($class = Credit::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Credit::class, $class, true); } /** * Set which class SimplePie uses for `<media:rating>` * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_rating_class($class = Rating::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Rating::class, $class, true); } /** * Set which class SimplePie uses for `<media:restriction>` * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_restriction_class($class = Restriction::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Restriction::class, $class, true); } /** * Set which class SimplePie uses for content-type sniffing * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_content_type_sniffer_class($class = Sniffer::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Sniffer::class, $class, true); } /** * Set which class SimplePie uses item sources * * @deprecated since SimplePie 1.3, use {@see get_registry()} instead * * @param string $class Name of custom class * * @return boolean True on success, false otherwise */ public function set_source_class($class = Source::class) { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED); return $this->registry->register(Source::class, $class, true); } /** * Set the user agent string * * @param string $ua New user agent string. */ public function set_useragent($ua = null) { if ($ua === null) { $ua = \SimplePie\Misc::get_default_useragent(); } $this->useragent = (string) $ua; } /** * Set a namefilter to modify the cache filename with * * @param NameFilter $filter * * @return void */ public function set_cache_namefilter(NameFilter $filter): void { $this->cache_namefilter = $filter; } /** * Set callback function to create cache filename with * * @deprecated since SimplePie 1.8.0, use {@see set_cache_namefilter()} instead * * @param mixed $function Callback function */ public function set_cache_name_function($function = 'md5') { // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache_namefilter()" instead.', __METHOD__), \E_USER_DEPRECATED); if (is_callable($function)) { $this->cache_name_function = $function; $this->set_cache_namefilter(new CallableNameFilter($this->cache_name_function)); } } /** * Set options to make SP as fast as possible * * Forgoes a substantial amount of data sanitization in favor of speed. This * turns SimplePie into a dumb parser of feeds. * * @param bool $set Whether to set them or not */ public function set_stupidly_fast($set = false) { if ($set) { $this->enable_order_by_date(false); $this->remove_div(false); $this->strip_comments(false); $this->strip_htmltags(false); $this->strip_attributes(false); $this->add_attributes(false); $this->set_image_handler(false); $this->set_https_domains([]); } } /** * Set maximum number of feeds to check with autodiscovery * * @param int $max Maximum number of feeds to check */ public function set_max_checked_feeds($max = 10) { $this->max_checked_feeds = (int) $max; } public function remove_div($enable = true) { $this->sanitize->remove_div($enable); } public function strip_htmltags($tags = '', $encode = null) { if ($tags === '') { $tags = $this->strip_htmltags; } $this->sanitize->strip_htmltags($tags); if ($encode !== null) { $this->sanitize->encode_instead_of_strip($tags); } } public function encode_instead_of_strip($enable = true) { $this->sanitize->encode_instead_of_strip($enable); } public function rename_attributes($attribs = '') { if ($attribs === '') { $attribs = $this->rename_attributes; } $this->sanitize->rename_attributes($attribs); } public function strip_attributes($attribs = '') { if ($attribs === '') { $attribs = $this->strip_attributes; } $this->sanitize->strip_attributes($attribs); } public function add_attributes($attribs = '') { if ($attribs === '') { $attribs = $this->add_attributes; } $this->sanitize->add_attributes($attribs); } /** * Set the output encoding * * Allows you to override SimplePie's output to match that of your webpage. * This is useful for times when your webpages are not being served as * UTF-8. This setting will be obeyed by {@see handle_content_type()}, and * is similar to {@see set_input_encoding()}. * * It should be noted, however, that not all character encodings can support * all characters. If your page is being served as ISO-8859-1 and you try * to display a Japanese feed, you'll likely see garbled characters. * Because of this, it is highly recommended to ensure that your webpages * are served as UTF-8. * * The number of supported character encodings depends on whether your web * host supports {@link http://php.net/mbstring mbstring}, * {@link http://php.net/iconv iconv}, or both. See * {@link http://simplepie.org/wiki/faq/Supported_Character_Encodings} for * more information. * * @param string $encoding */ public function set_output_encoding($encoding = 'UTF-8') { $this->sanitize->set_output_encoding($encoding); } public function strip_comments($strip = false) { $this->sanitize->strip_comments($strip); } /** * Set element/attribute key/value pairs of HTML attributes * containing URLs that need to be resolved relative to the feed * * Defaults to |a|@href, |area|@href, |blockquote|@cite, |del|@cite, * |form|@action, |img|@longdesc, |img|@src, |input|@src, |ins|@cite, * |q|@cite * * @since 1.0 * @param array|null $element_attribute Element/attribute key/value pairs, null for default */ public function set_url_replacements($element_attribute = null) { $this->sanitize->set_url_replacements($element_attribute); } /** * Set the list of domains for which to force HTTPS. * @see \SimplePie\Sanitize::set_https_domains() * @param array List of HTTPS domains. Example array('biz', 'example.com', 'example.org', 'www.example.net'). */ public function set_https_domains($domains = []) { if (is_array($domains)) { $this->sanitize->set_https_domains($domains); } } /** * Set the handler to enable the display of cached images. * * @param string $page Web-accessible path to the handler_image.php file. * @param string $qs The query string that the value should be passed to. */ public function set_image_handler($page = false, $qs = 'i') { if ($page !== false) { $this->sanitize->set_image_handler($page . '?' . $qs . '='); } else { $this->image_handler = ''; } } /** * Set the limit for items returned per-feed with multifeeds * * @param integer $limit The maximum number of items to return. */ public function set_item_limit($limit = 0) { $this->item_limit = (int) $limit; } /** * Enable throwing exceptions * * @param boolean $enable Should we throw exceptions, or use the old-style error property? */ public function enable_exceptions($enable = true) { $this->enable_exceptions = $enable; } /** * Initialize the feed object * * This is what makes everything happen. Period. This is where all of the * configuration options get processed, feeds are fetched, cached, and * parsed, and all of that other good stuff. * * @return boolean True if successful, false otherwise */ public function init() { // Check absolute bare minimum requirements. if (!extension_loaded('xml') || !extension_loaded('pcre')) { $this->error = 'XML or PCRE extensions not loaded!'; return false; } // Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP < 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don't have xmlreader. elseif (!extension_loaded('xmlreader')) { static $xml_is_sane = null; if ($xml_is_sane === null) { $parser_check = xml_parser_create(); xml_parse_into_struct($parser_check, '<foo>&</foo>', $values); xml_parser_free($parser_check); $xml_is_sane = isset($values[0]['value']); } if (!$xml_is_sane) { return false; } } // The default sanitize class gets set in the constructor, check if it has // changed. if ($this->registry->get_class(Sanitize::class) !== 'SimplePie\Sanitize') { $this->sanitize = $this->registry->create(Sanitize::class); } if (method_exists($this->sanitize, 'set_registry')) { $this->sanitize->set_registry($this->registry); } // Pass whatever was set with config options over to the sanitizer. // Pass the classes in for legacy support; new classes should use the registry instead $this->sanitize->pass_cache_data( $this->enable_cache, $this->cache_location, $this->cache_namefilter, $this->registry->get_class(Cache::class), $this->cache ); $this->sanitize->pass_file_data($this->registry->get_class(File::class), $this->timeout, $this->useragent, $this->force_fsockopen, $this->curl_options); if (!empty($this->multifeed_url)) { $i = 0; $success = 0; $this->multifeed_objects = []; $this->error = []; foreach ($this->multifeed_url as $url) { $this->multifeed_objects[$i] = clone $this; $this->multifeed_objects[$i]->set_feed_url($url); $single_success = $this->multifeed_objects[$i]->init(); $success |= $single_success; if (!$single_success) { $this->error[$i] = $this->multifeed_objects[$i]->error(); } $i++; } return (bool) $success; } elseif ($this->feed_url === null && $this->raw_data === null) { return false; } $this->error = null; $this->data = []; $this->check_modified = false; $this->multifeed_objects = []; $cache = false; if ($this->feed_url !== null) { $parsed_feed_url = $this->registry->call(Misc::class, 'parse_url', [$this->feed_url]); // Decide whether to enable caching if ($this->enable_cache && $parsed_feed_url['scheme'] !== '') { $cache = $this->get_cache($this->feed_url); } // Fetch the data via \SimplePie\File into $this->raw_data if (($fetched = $this->fetch_data($cache)) === true) { return true; } elseif ($fetched === false) { return false; } [$headers, $sniffed] = $fetched; } // Empty response check if (empty($this->raw_data)) { $this->error = "A feed could not be found at `$this->feed_url`. Empty body."; $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]); return false; } // Set up array of possible encodings $encodings = []; // First check to see if input has been overridden. if ($this->input_encoding !== false) { $encodings[] = strtoupper($this->input_encoding); } $application_types = ['application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity']; $text_types = ['text/xml', 'text/xml-external-parsed-entity']; // RFC 3023 (only applies to sniffed content) if (isset($sniffed)) { if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml') { if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset)) { $encodings[] = strtoupper($charset[1]); } $encodings = array_merge($encodings, $this->registry->call(Misc::class, 'xml_encoding', [$this->raw_data, &$this->registry])); $encodings[] = 'UTF-8'; } elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml') { if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset)) { $encodings[] = strtoupper($charset[1]); } $encodings[] = 'US-ASCII'; } // Text MIME-type default elseif (substr($sniffed, 0, 5) === 'text/') { $encodings[] = 'UTF-8'; } } // Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1 $encodings = array_merge($encodings, $this->registry->call(Misc::class, 'xml_encoding', [$this->raw_data, &$this->registry])); $encodings[] = 'UTF-8'; $encodings[] = 'ISO-8859-1'; // There's no point in trying an encoding twice $encodings = array_unique($encodings); // Loop through each possible encoding, till we return something, or run out of possibilities foreach ($encodings as $encoding) { // Change the encoding to UTF-8 (as we always use UTF-8 internally) if ($utf8_data = $this->registry->call(Misc::class, 'change_encoding', [$this->raw_data, $encoding, 'UTF-8'])) { // Create new parser $parser = $this->registry->create(Parser::class); // If it's parsed fine if ($parser->parse($utf8_data, 'UTF-8', $this->permanent_url)) { $this->data = $parser->get_data(); if (!($this->get_type() & ~self::TYPE_NONE)) { $this->error = "A feed could not be found at `$this->feed_url`. This does not appear to be a valid RSS or Atom feed."; $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]); return false; } if (isset($headers)) { $this->data['headers'] = $headers; } $this->data['build'] = \SimplePie\Misc::get_build(); // Cache the file if caching is enabled $this->data['cache_expiration_time'] = $this->cache_duration + time(); if ($cache && !$cache->set_data($this->get_cache_filename($this->feed_url), $this->data, $this->cache_duration)) { trigger_error("$this->cache_location is not writable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING); } return true; } } } if (isset($parser)) { // We have an error, just set \SimplePie\Misc::error to it and quit $this->error = $this->feed_url; $this->error .= sprintf(' is invalid XML, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column()); } else { $this->error = 'The data could not be converted to UTF-8.'; if (!extension_loaded('mbstring') && !extension_loaded('iconv') && !class_exists('\UConverter')) { $this->error .= ' You MUST have either the iconv, mbstring or intl (PHP 5.5+) extension installed and enabled.'; } else { $missingExtensions = []; if (!extension_loaded('iconv')) { $missingExtensions[] = 'iconv'; } if (!extension_loaded('mbstring')) { $missingExtensions[] = 'mbstring'; } if (!class_exists('\UConverter')) { $missingExtensions[] = 'intl (PHP 5.5+)'; } $this->error .= ' Try installing/enabling the ' . implode(' or ', $missingExtensions) . ' extension.'; } } $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]); return false; } /** * Fetch the data via \SimplePie\File * * If the data is already cached, attempt to fetch it from there instead * @param Base|DataCache|false $cache Cache handler, or false to not load from the cache * @return array|true Returns true if the data was loaded from the cache, or an array of HTTP headers and sniffed type */ protected function fetch_data(&$cache) { if (is_object($cache) && $cache instanceof Base) { // @trigger_error(sprintf('Providing $cache as "\SimplePie\Cache\Base" in %s() is deprecated since SimplePie 1.8.0, please provide "\SimplePie\Cache\DataCache" implementation instead.', __METHOD__), \E_USER_DEPRECATED); $cache = new BaseDataCache($cache); } if ($cache !== false && !$cache instanceof DataCache) { throw new InvalidArgumentException(sprintf( '%s(): Argument #1 ($cache) must be of type %s|false', __METHOD__, DataCache::class ), 1); } $cacheKey = $this->get_cache_filename($this->feed_url); // If it's enabled, use the cache if ($cache) { // Load the Cache $this->data = $cache->get_data($cacheKey, []); if (!empty($this->data)) { // If the cache is for an outdated build of SimplePie if (!isset($this->data['build']) || $this->data['build'] !== \SimplePie\Misc::get_build()) { $cache->delete_data($cacheKey); $this->data = []; } // If we've hit a collision just rerun it with caching disabled elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url) { $cache = false; $this->data = []; } // If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL. elseif (isset($this->data['feed_url'])) { // Do not need to do feed autodiscovery yet. if ($this->data['feed_url'] !== $this->data['url']) { $this->set_feed_url($this->data['feed_url']); $this->data['url'] = $this->data['feed_url']; $cache->set_data($this->get_cache_filename($this->feed_url), $this->data, $this->autodiscovery_cache_duration); return $this->init(); } $cache->delete_data($this->get_cache_filename($this->feed_url)); $this->data = []; } // Check if the cache has been updated elseif (isset($this->data['cache_expiration_time']) && $this->data['cache_expiration_time'] > time()) { // Want to know if we tried to send last-modified and/or etag headers // when requesting this file. (Note that it's up to the file to // support this, but we don't always send the headers either.) $this->check_modified = true; if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag'])) { $headers = [ 'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1', ]; if (isset($this->data['headers']['last-modified'])) { $headers['if-modified-since'] = $this->data['headers']['last-modified']; } if (isset($this->data['headers']['etag'])) { $headers['if-none-match'] = $this->data['headers']['etag']; } $file = $this->registry->create(File::class, [$this->feed_url, $this->timeout / 10, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]); $this->status_code = $file->status_code; if ($file->success) { if ($file->status_code === 304) { // Set raw_data to false here too, to signify that the cache // is still valid. $this->raw_data = false; $cache->set_data($cacheKey, $this->data, $this->cache_duration); return true; } } else { $this->check_modified = false; if ($this->force_cache_fallback) { $cache->set_data($cacheKey, $this->data, $this->cache_duration); return true; } unset($file); } } } // If the cache is still valid, just return true else { $this->raw_data = false; return true; } } // If the cache is empty else { $this->data = []; } } // If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it. if (!isset($file)) { if ($this->file instanceof \SimplePie\File && $this->file->url === $this->feed_url) { $file = &$this->file; } else { $headers = [ 'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1', ]; $file = $this->registry->create(File::class, [$this->feed_url, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]); } } $this->status_code = $file->status_code; // If the file connection has an error, set SimplePie::error to that and quit if (!$file->success && !($file->method & self::FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300))) { $this->error = $file->error; return !empty($this->data); } if (!$this->force_feed) { // Check if the supplied URL is a feed, if it isn't, look for it. $locate = $this->registry->create(Locator::class, [&$file, $this->timeout, $this->useragent, $this->max_checked_feeds, $this->force_fsockopen, $this->curl_options]); if (!$locate->is_feed($file)) { $copyStatusCode = $file->status_code; $copyContentType = $file->headers['content-type']; try { $microformats = false; if (class_exists('DOMXpath') && function_exists('Mf2\parse')) { $doc = new \DOMDocument(); @$doc->loadHTML($file->body); $xpath = new \DOMXpath($doc); // Check for both h-feed and h-entry, as both a feed with no entries // and a list of entries without an h-feed wrapper are both valid. $query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '. 'contains(concat(" ", @class, " "), " h-entry ")]'; $result = $xpath->query($query); $microformats = $result->length !== 0; } // Now also do feed discovery, but if microformats were found don't // overwrite the current value of file. $discovered = $locate->find( $this->autodiscovery, $this->all_discovered_feeds ); if ($microformats) { if ($hub = $locate->get_rel_link('hub')) { $self = $locate->get_rel_link('self'); $this->store_links($file, $hub, $self); } // Push the current file onto all_discovered feeds so the user can // be shown this as one of the options. if (isset($this->all_discovered_feeds)) { $this->all_discovered_feeds[] = $file; } } else { if ($discovered) { $file = $discovered; } else { // We need to unset this so that if SimplePie::set_file() has // been called that object is untouched unset($file); $this->error = "A feed could not be found at `$this->feed_url`; the status code is `$copyStatusCode` and content-type is `$copyContentType`"; $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]); return false; } } } catch (\SimplePie\Exception $e) { // We need to unset this so that if SimplePie::set_file() has been called that object is untouched unset($file); // This is usually because DOMDocument doesn't exist $this->error = $e->getMessage(); $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, $e->getFile(), $e->getLine()]); return false; } if ($cache) { $this->data = [ 'url' => $this->feed_url, 'feed_url' => $file->url, 'build' => \SimplePie\Misc::get_build(), 'cache_expiration_time' => $this->cache_duration + time(), ]; if (!$cache->set_data($cacheKey, $this->data, $this->cache_duration)) { trigger_error("$this->cache_location is not writable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING); } } } $this->feed_url = $file->url; $locate = null; } $this->raw_data = $file->body; $this->permanent_url = $file->permanent_url; $headers = $file->headers; $sniffer = $this->registry->create(Sniffer::class, [&$file]); $sniffed = $sniffer->get_type(); return [$headers, $sniffed]; } /** * Get the error message for the occurred error * * @return string|array Error message, or array of messages for multifeeds */ public function error() { return $this->error; } /** * Get the last HTTP status code * * @return int Status code */ public function status_code() { return $this->status_code; } /** * Get the raw XML * * This is the same as the old `$feed->enable_xml_dump(true)`, but returns * the data instead of printing it. * * @return string|boolean Raw XML data, false if the cache is used */ public function get_raw_data() { return $this->raw_data; } /** * Get the character encoding used for output * * @since Preview Release * @return string */ public function get_encoding() { return $this->sanitize->output_encoding; } /** * Send the content-type header with correct encoding * * This method ensures that the SimplePie-enabled page is being served with * the correct {@link http://www.iana.org/assignments/media-types/ mime-type} * and character encoding HTTP headers (character encoding determined by the * {@see set_output_encoding} config option). * * This won't work properly if any content or whitespace has already been * sent to the browser, because it relies on PHP's * {@link http://php.net/header header()} function, and these are the * circumstances under which the function works. * * Because it's setting these settings for the entire page (as is the nature * of HTTP headers), this should only be used once per page (again, at the * top). * * @param string $mime MIME type to serve the page as */ public function handle_content_type($mime = 'text/html') { if (!headers_sent()) { $header = "Content-type: $mime;"; if ($this->get_encoding()) { $header .= ' charset=' . $this->get_encoding(); } else { $header .= ' charset=UTF-8'; } header($header); } } /** * Get the type of the feed * * This returns a \SimplePie\SimplePie::TYPE_* constant, which can be tested against * using {@link http://php.net/language.operators.bitwise bitwise operators} * * @since 0.8 (usage changed to using constants in 1.0) * @see \SimplePie\SimplePie::TYPE_NONE Unknown. * @see \SimplePie\SimplePie::TYPE_RSS_090 RSS 0.90. * @see \SimplePie\SimplePie::TYPE_RSS_091_NETSCAPE RSS 0.91 (Netscape). * @see \SimplePie\SimplePie::TYPE_RSS_091_USERLAND RSS 0.91 (Userland). * @see \SimplePie\SimplePie::TYPE_RSS_091 RSS 0.91. * @see \SimplePie\SimplePie::TYPE_RSS_092 RSS 0.92. * @see \SimplePie\SimplePie::TYPE_RSS_093 RSS 0.93. * @see \SimplePie\SimplePie::TYPE_RSS_094 RSS 0.94. * @see \SimplePie\SimplePie::TYPE_RSS_10 RSS 1.0. * @see \SimplePie\SimplePie::TYPE_RSS_20 RSS 2.0.x. * @see \SimplePie\SimplePie::TYPE_RSS_RDF RDF-based RSS. * @see \SimplePie\SimplePie::TYPE_RSS_SYNDICATION Non-RDF-based RSS (truly intended as syndication format). * @see \SimplePie\SimplePie::TYPE_RSS_ALL Any version of RSS. * @see \SimplePie\SimplePie::TYPE_ATOM_03 Atom 0.3. * @see \SimplePie\SimplePie::TYPE_ATOM_10 Atom 1.0. * @see \SimplePie\SimplePie::TYPE_ATOM_ALL Any version of Atom. * @see \SimplePie\SimplePie::TYPE_ALL Any known/supported feed type. * @return int \SimplePie\SimplePie::TYPE_* constant */ public function get_type() { if (!isset($this->data['type'])) { $this->data['type'] = self::TYPE_ALL; if (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'])) { $this->data['type'] &= self::TYPE_ATOM_10; } elseif (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'])) { $this->data['type'] &= self::TYPE_ATOM_03; } elseif (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'])) { if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['channel']) || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['image']) || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['item']) || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['textinput'])) { $this->data['type'] &= self::TYPE_RSS_10; } if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['channel']) || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['image']) || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['item']) || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['textinput'])) { $this->data['type'] &= self::TYPE_RSS_090; } } elseif (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'])) { $this->data['type'] &= self::TYPE_RSS_ALL; if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version'])) { switch (trim($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version'])) { case '0.91': $this->data['type'] &= self::TYPE_RSS_091; if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][self::NAMESPACE_RSS_20]['skiphours']['hour'][0]['data'])) { switch (trim($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][self::NAMESPACE_RSS_20]['skiphours']['hour'][0]['data'])) { case '0': $this->data['type'] &= self::TYPE_RSS_091_NETSCAPE; break; case '24': $this->data['type'] &= self::TYPE_RSS_091_USERLAND; break; } } break; case '0.92': $this->data['type'] &= self::TYPE_RSS_092; break; case '0.93': $this->data['type'] &= self::TYPE_RSS_093; break; case '0.94': $this->data['type'] &= self::TYPE_RSS_094; break; case '2.0': $this->data['type'] &= self::TYPE_RSS_20; break; } } } else { $this->data['type'] = self::TYPE_NONE; } } return $this->data['type']; } /** * Get the URL for the feed * * When the 'permanent' mode is enabled, returns the original feed URL, * except in the case of an `HTTP 301 Moved Permanently` status response, * in which case the location of the first redirection is returned. * * When the 'permanent' mode is disabled (default), * may or may not be different from the URL passed to {@see set_feed_url()}, * depending on whether auto-discovery was used, and whether there were * any redirects along the way. * * @since Preview Release (previously called `get_feed_url()` since SimplePie 0.8.) * @todo Support <itunes:new-feed-url> * @todo Also, |atom:link|@rel=self * @param bool $permanent Permanent mode to return only the original URL or the first redirection * iff it is a 301 redirection * @return string|null */ public function subscribe_url($permanent = false) { if ($permanent) { if ($this->permanent_url !== null) { // sanitize encodes ampersands which are required when used in a url. return str_replace( '&', '&', $this->sanitize( $this->permanent_url, self::CONSTRUCT_IRI ) ); } } else { if ($this->feed_url !== null) { return str_replace( '&', '&', $this->sanitize( $this->feed_url, self::CONSTRUCT_IRI ) ); } } return null; } /** * Get data for an feed-level element * * This method allows you to get access to ANY element/attribute that is a * sub-element of the opening feed tag. * * The return value is an indexed array of elements matching the given * namespace and tag name. Each element has `attribs`, `data` and `child` * subkeys. For `attribs` and `child`, these contain namespace subkeys. * `attribs` then has one level of associative name => value data (where * `value` is a string) after the namespace. `child` has tag-indexed keys * after the namespace, each member of which is an indexed array matching * this same format. * * For example: * <pre> * // This is probably a bad example because we already support * // <media:content> natively, but it shows you how to parse through * // the nodes. * $group = $item->get_item_tags(\SimplePie\SimplePie::NAMESPACE_MEDIARSS, 'group'); * $content = $group[0]['child'][\SimplePie\SimplePie::NAMESPACE_MEDIARSS]['content']; * $file = $content[0]['attribs']['']['url']; * echo $file; * </pre> * * @since 1.0 * @see http://simplepie.org/wiki/faq/supported_xml_namespaces * @param string $namespace The URL of the XML namespace of the elements you're trying to access * @param string $tag Tag name * @return array */ public function get_feed_tags($namespace, $tag) { $type = $this->get_type(); if ($type & self::TYPE_ATOM_10) { if (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag])) { return $this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag]; } } if ($type & self::TYPE_ATOM_03) { if (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag])) { return $this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag]; } } if ($type & self::TYPE_RSS_RDF) { if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag])) { return $this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag]; } } if ($type & self::TYPE_RSS_SYNDICATION) { if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag])) { return $this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag]; } } return null; } /** * Get data for an channel-level element * * This method allows you to get access to ANY element/attribute in the * channel/header section of the feed. * * See {@see SimplePie::get_feed_tags()} for a description of the return value * * @since 1.0 * @see http://simplepie.org/wiki/faq/supported_xml_namespaces * @param string $namespace The URL of the XML namespace of the elements you're trying to access * @param string $tag Tag name * @return array */ public function get_channel_tags($namespace, $tag) { $type = $this->get_type(); if ($type & self::TYPE_ATOM_ALL) { if ($return = $this->get_feed_tags($namespace, $tag)) { return $return; } } if ($type & self::TYPE_RSS_10) { if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'channel')) { if (isset($channel[0]['child'][$namespace][$tag])) { return $channel[0]['child'][$namespace][$tag]; } } } if ($type & self::TYPE_RSS_090) { if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'channel')) { if (isset($channel[0]['child'][$namespace][$tag])) { return $channel[0]['child'][$namespace][$tag]; } } } if ($type & self::TYPE_RSS_SYNDICATION) { if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_20, 'channel')) { if (isset($channel[0]['child'][$namespace][$tag])) { return $channel[0]['child'][$namespace][$tag]; } } } return null; } /** * Get data for an channel-level element * * This method allows you to get access to ANY element/attribute in the * image/logo section of the feed. * * See {@see SimplePie::get_feed_tags()} for a description of the return value * * @since 1.0 * @see http://simplepie.org/wiki/faq/supported_xml_namespaces * @param string $namespace The URL of the XML namespace of the elements you're trying to access * @param string $tag Tag name * @return array */ public function get_image_tags($namespace, $tag) { $type = $this->get_type(); if ($type & self::TYPE_RSS_10) { if ($image = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'image')) { if (isset($image[0]['child'][$namespace][$tag])) { return $image[0]['child'][$namespace][$tag]; } } } if ($type & self::TYPE_RSS_090) { if ($image = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'image')) { if (isset($image[0]['child'][$namespace][$tag])) { return $image[0]['child'][$namespace][$tag]; } } } if ($type & self::TYPE_RSS_SYNDICATION) { if ($image = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'image')) { if (isset($image[0]['child'][$namespace][$tag])) { return $image[0]['child'][$namespace][$tag]; } } } return null; } /** * Get the base URL value from the feed * * Uses `<xml:base>` if available, otherwise uses the first link in the * feed, or failing that, the URL of the feed itself. * * @see get_link * @see subscribe_url * * @param array $element * @return string */ public function get_base($element = []) { if (!empty($element['xml_base_explicit']) && isset($element['xml_base'])) { return $element['xml_base']; } elseif ($this->get_link() !== null) { return $this->get_link(); } return $this->subscribe_url(); } /** * Sanitize feed data * * @access private * @see \SimplePie\Sanitize::sanitize() * @param string $data Data to sanitize * @param int $type One of the \SimplePie\SimplePie::CONSTRUCT_* constants * @param string $base Base URL to resolve URLs against * @return string Sanitized data */ public function sanitize($data, $type, $base = '') { try { return $this->sanitize->sanitize($data, $type, $base); } catch (\SimplePie\Exception $e) { if (!$this->enable_exceptions) { $this->error = $e->getMessage(); $this->registry->call(Misc::class, 'error', [$this->error, E_USER_WARNING, $e->getFile(), $e->getLine()]); return ''; } throw $e; } } /** * Get the title of the feed * * Uses `<atom:title>`, `<title>` or `<dc:title>` * * @since 1.0 (previously called `get_feed_title` since 0.8) * @return string|null */ public function get_title() { if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'title')) { return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'title')) { return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } return null; } /** * Get a category for the feed * * @since Unknown * @param int $key The category that you want to return. Remember that arrays begin with 0, not 1 * @return \SimplePie\Category|null */ public function get_category($key = 0) { $categories = $this->get_categories(); if (isset($categories[$key])) { return $categories[$key]; } return null; } /** * Get all categories for the feed * * Uses `<atom:category>`, `<category>` or `<dc:subject>` * * @since Unknown * @return array|null List of {@see \SimplePie\Category} objects */ public function get_categories() { $categories = []; foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'category') as $category) { $term = null; $scheme = null; $label = null; if (isset($category['attribs']['']['term'])) { $term = $this->sanitize($category['attribs']['']['term'], self::CONSTRUCT_TEXT); } if (isset($category['attribs']['']['scheme'])) { $scheme = $this->sanitize($category['attribs']['']['scheme'], self::CONSTRUCT_TEXT); } if (isset($category['attribs']['']['label'])) { $label = $this->sanitize($category['attribs']['']['label'], self::CONSTRUCT_TEXT); } $categories[] = $this->registry->create(Category::class, [$term, $scheme, $label]); } foreach ((array) $this->get_channel_tags(self::NAMESPACE_RSS_20, 'category') as $category) { // This is really the label, but keep this as the term also for BC. // Label will also work on retrieving because that falls back to term. $term = $this->sanitize($category['data'], self::CONSTRUCT_TEXT); if (isset($category['attribs']['']['domain'])) { $scheme = $this->sanitize($category['attribs']['']['domain'], self::CONSTRUCT_TEXT); } else { $scheme = null; } $categories[] = $this->registry->create(Category::class, [$term, $scheme, null]); } foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_11, 'subject') as $category) { $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], self::CONSTRUCT_TEXT), null, null]); } foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_10, 'subject') as $category) { $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], self::CONSTRUCT_TEXT), null, null]); } if (!empty($categories)) { return array_unique($categories); } return null; } /** * Get an author for the feed * * @since 1.1 * @param int $key The author that you want to return. Remember that arrays begin with 0, not 1 * @return \SimplePie\Author|null */ public function get_author($key = 0) { $authors = $this->get_authors(); if (isset($authors[$key])) { return $authors[$key]; } return null; } /** * Get all authors for the feed * * Uses `<atom:author>`, `<author>`, `<dc:creator>` or `<itunes:author>` * * @since 1.1 * @return array|null List of {@see \SimplePie\Author} objects */ public function get_authors() { $authors = []; foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'author') as $author) { $name = null; $uri = null; $email = null; if (isset($author['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'])) { $name = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'], self::CONSTRUCT_TEXT); } if (isset($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'])) { $uri = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($author['child'][self::NAMESPACE_ATOM_10]['uri'][0])); } if (isset($author['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'])) { $email = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'], self::CONSTRUCT_TEXT); } if ($name !== null || $email !== null || $uri !== null) { $authors[] = $this->registry->create(Author::class, [$name, $uri, $email]); } } if ($author = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'author')) { $name = null; $url = null; $email = null; if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'])) { $name = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'], self::CONSTRUCT_TEXT); } if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'])) { $url = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0])); } if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'])) { $email = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'], self::CONSTRUCT_TEXT); } if ($name !== null || $email !== null || $url !== null) { $authors[] = $this->registry->create(Author::class, [$name, $url, $email]); } } foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_11, 'creator') as $author) { $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]); } foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_10, 'creator') as $author) { $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]); } foreach ((array) $this->get_channel_tags(self::NAMESPACE_ITUNES, 'author') as $author) { $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]); } if (!empty($authors)) { return array_unique($authors); } return null; } /** * Get a contributor for the feed * * @since 1.1 * @param int $key The contrbutor that you want to return. Remember that arrays begin with 0, not 1 * @return \SimplePie\Author|null */ public function get_contributor($key = 0) { $contributors = $this->get_contributors(); if (isset($contributors[$key])) { return $contributors[$key]; } return null; } /** * Get all contributors for the feed * * Uses `<atom:contributor>` * * @since 1.1 * @return array|null List of {@see \SimplePie\Author} objects */ public function get_contributors() { $contributors = []; foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'contributor') as $contributor) { $name = null; $uri = null; $email = null; if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'])) { $name = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'], self::CONSTRUCT_TEXT); } if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'])) { $uri = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0])); } if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'])) { $email = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'], self::CONSTRUCT_TEXT); } if ($name !== null || $email !== null || $uri !== null) { $contributors[] = $this->registry->create(Author::class, [$name, $uri, $email]); } } foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'contributor') as $contributor) { $name = null; $url = null; $email = null; if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'])) { $name = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'], self::CONSTRUCT_TEXT); } if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'])) { $url = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0])); } if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'])) { $email = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'], self::CONSTRUCT_TEXT); } if ($name !== null || $email !== null || $url !== null) { $contributors[] = $this->registry->create(Author::class, [$name, $url, $email]); } } if (!empty($contributors)) { return array_unique($contributors); } return null; } /** * Get a single link for the feed * * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8) * @param int $key The link that you want to return. Remember that arrays begin with 0, not 1 * @param string $rel The relationship of the link to return * @return string|null Link URL */ public function get_link($key = 0, $rel = 'alternate') { $links = $this->get_links($rel); if (isset($links[$key])) { return $links[$key]; } return null; } /** * Get the permalink for the item * * Returns the first link available with a relationship of "alternate". * Identical to {@see get_link()} with key 0 * * @see get_link * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8) * @internal Added for parity between the parent-level and the item/entry-level. * @return string|null Link URL */ public function get_permalink() { return $this->get_link(0); } /** * Get all links for the feed * * Uses `<atom:link>` or `<link>` * * @since Beta 2 * @param string $rel The relationship of links to return * @return array|null Links found for the feed (strings) */ public function get_links($rel = 'alternate') { if (!isset($this->data['links'])) { $this->data['links'] = []; if ($links = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'link')) { foreach ($links as $link) { if (isset($link['attribs']['']['href'])) { $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate'; $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], self::CONSTRUCT_IRI, $this->get_base($link)); } } } if ($links = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'link')) { foreach ($links as $link) { if (isset($link['attribs']['']['href'])) { $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate'; $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], self::CONSTRUCT_IRI, $this->get_base($link)); } } } if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'link')) { $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0])); } if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'link')) { $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0])); } if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'link')) { $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0])); } $keys = array_keys($this->data['links']); foreach ($keys as $key) { if ($this->registry->call(Misc::class, 'is_isegment_nz_nc', [$key])) { if (isset($this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key])) { $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key]); $this->data['links'][$key] = &$this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key]; } else { $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key] = &$this->data['links'][$key]; } } elseif (substr($key, 0, 41) === self::IANA_LINK_RELATIONS_REGISTRY) { $this->data['links'][substr($key, 41)] = &$this->data['links'][$key]; } $this->data['links'][$key] = array_unique($this->data['links'][$key]); } } if (isset($this->data['headers']['link'])) { $link_headers = $this->data['headers']['link']; if (is_array($link_headers)) { $link_headers = implode(',', $link_headers); } // https://datatracker.ietf.org/doc/html/rfc8288 if (is_string($link_headers) && preg_match_all('/<(?P<uri>[^>]+)>\s*;\s*rel\s*=\s*(?P<quote>"?)' . preg_quote($rel) . '(?P=quote)\s*(?=,|$)/i', $link_headers, $matches)) { return $matches['uri']; } } if (isset($this->data['links'][$rel])) { return $this->data['links'][$rel]; } return null; } public function get_all_discovered_feeds() { return $this->all_discovered_feeds; } /** * Get the content for the item * * Uses `<atom:subtitle>`, `<atom:tagline>`, `<description>`, * `<dc:description>`, `<itunes:summary>` or `<itunes:subtitle>` * * @since 1.0 (previously called `get_feed_description()` since 0.8) * @return string|null */ public function get_description() { if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'subtitle')) { return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'tagline')) { return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'description')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'description')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'description')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'description')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'description')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'summary')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'subtitle')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0])); } return null; } /** * Get the copyright info for the feed * * Uses `<atom:rights>`, `<atom:copyright>` or `<dc:rights>` * * @since 1.0 (previously called `get_feed_copyright()` since 0.8) * @return string|null */ public function get_copyright() { if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'rights')) { return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'copyright')) { return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'copyright')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'rights')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'rights')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } return null; } /** * Get the language for the feed * * Uses `<language>`, `<dc:language>`, or @xml_lang * * @since 1.0 (previously called `get_feed_language()` since 0.8) * @return string|null */ public function get_language() { if ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'language')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'language')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'language')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['xml_lang'])) { return $this->sanitize($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['xml_lang'], self::CONSTRUCT_TEXT); } elseif (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['xml_lang'])) { return $this->sanitize($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['xml_lang'], self::CONSTRUCT_TEXT); } elseif (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['xml_lang'])) { return $this->sanitize($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['xml_lang'], self::CONSTRUCT_TEXT); } elseif (isset($this->data['headers']['content-language'])) { return $this->sanitize($this->data['headers']['content-language'], self::CONSTRUCT_TEXT); } return null; } /** * Get the latitude coordinates for the item * * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications * * Uses `<geo:lat>` or `<georss:point>` * * @since 1.0 * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo * @link http://www.georss.org/ GeoRSS * @return string|null */ public function get_latitude() { if ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'lat')) { return (float) $return[0]['data']; } elseif (($return = $this->get_channel_tags(self::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) { return (float) $match[1]; } return null; } /** * Get the longitude coordinates for the feed * * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications * * Uses `<geo:long>`, `<geo:lon>` or `<georss:point>` * * @since 1.0 * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo * @link http://www.georss.org/ GeoRSS * @return string|null */ public function get_longitude() { if ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'long')) { return (float) $return[0]['data']; } elseif ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'lon')) { return (float) $return[0]['data']; } elseif (($return = $this->get_channel_tags(self::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) { return (float) $match[2]; } return null; } /** * Get the feed logo's title * * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" title. * * Uses `<image><title>` or `<image><dc:title>` * * @return string|null */ public function get_image_title() { if ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_image_tags(self::NAMESPACE_DC_11, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } elseif ($return = $this->get_image_tags(self::NAMESPACE_DC_10, 'title')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT); } return null; } /** * Get the feed logo's URL * * RSS 0.9.0, 2.0, Atom 1.0, and feeds with iTunes RSS tags are allowed to * have a "feed logo" URL. This points directly to the image itself. * * Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`, * `<image><title>` or `<image><dc:title>` * * @return string|null */ public function get_image_url() { if ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'image')) { return $this->sanitize($return[0]['attribs']['']['href'], self::CONSTRUCT_IRI); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'logo')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'icon')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'url')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'url')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } return null; } /** * Get the feed logo's link * * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" link. This * points to a human-readable page that the image should link to. * * Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`, * `<image><title>` or `<image><dc:title>` * * @return string|null */ public function get_image_link() { if ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'link')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'link')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'link')) { return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0])); } return null; } /** * Get the feed logo's link * * RSS 2.0 feeds are allowed to have a "feed logo" width. * * Uses `<image><width>` or defaults to 88 if no width is specified and * the feed is an RSS 2.0 feed. * * @return int|null */ public function get_image_width() { if ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'width')) { return intval($return[0]['data']); } elseif ($this->get_type() & self::TYPE_RSS_SYNDICATION && $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) { return 88; } return null; } /** * Get the feed logo's height * * RSS 2.0 feeds are allowed to have a "feed logo" height. * * Uses `<image><height>` or defaults to 31 if no height is specified and * the feed is an RSS 2.0 feed. * * @return int|null */ public function get_image_height() { if ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'height')) { return intval($return[0]['data']); } elseif ($this->get_type() & self::TYPE_RSS_SYNDICATION && $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) { return 31; } return null; } /** * Get the number of items in the feed * * This is well-suited for {@link http://php.net/for for()} loops with * {@see get_item()} * * @param int $max Maximum value to return. 0 for no limit * @return int Number of items in the feed */ public function get_item_quantity($max = 0) { $max = (int) $max; $qty = count($this->get_items()); if ($max === 0) { return $qty; } return ($qty > $max) ? $max : $qty; } /** * Get a single item from the feed * * This is better suited for {@link http://php.net/for for()} loops, whereas * {@see get_items()} is better suited for * {@link http://php.net/foreach foreach()} loops. * * @see get_item_quantity() * @since Beta 2 * @param int $key The item that you want to return. Remember that arrays begin with 0, not 1 * @return \SimplePie\Item|null */ public function get_item($key = 0) { $items = $this->get_items(); if (isset($items[$key])) { return $items[$key]; } return null; } /** * Get all items from the feed * * This is better suited for {@link http://php.net/for for()} loops, whereas * {@see get_items()} is better suited for * {@link http://php.net/foreach foreach()} loops. * * @see get_item_quantity * @since Beta 2 * @param int $start Index to start at * @param int $end Number of items to return. 0 for all items after `$start` * @return \SimplePie\Item[]|null List of {@see \SimplePie\Item} objects */ public function get_items($start = 0, $end = 0) { if (!isset($this->data['items'])) { if (!empty($this->multifeed_objects)) { $this->data['items'] = SimplePie::merge_items($this->multifeed_objects, $start, $end, $this->item_limit); if (empty($this->data['items'])) { return []; } return $this->data['items']; } $this->data['items'] = []; if ($items = $this->get_feed_tags(self::NAMESPACE_ATOM_10, 'entry')) { $keys = array_keys($items); foreach ($keys as $key) { $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]); } } if ($items = $this->get_feed_tags(self::NAMESPACE_ATOM_03, 'entry')) { $keys = array_keys($items); foreach ($keys as $key) { $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]); } } if ($items = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'item')) { $keys = array_keys($items); foreach ($keys as $key) { $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]); } } if ($items = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'item')) { $keys = array_keys($items); foreach ($keys as $key) { $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]); } } if ($items = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'item')) { $keys = array_keys($items); foreach ($keys as $key) { $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]); } } } if (empty($this->data['items'])) { return []; } if ($this->order_by_date) { if (!isset($this->data['ordered_items'])) { $this->data['ordered_items'] = $this->data['items']; usort($this->data['ordered_items'], [get_class($this), 'sort_items']); } $items = $this->data['ordered_items']; } else { $items = $this->data['items']; } // Slice the data as desired if ($end === 0) { return array_slice($items, $start); } return array_slice($items, $start, $end); } /** * Set the favicon handler * * @deprecated Use your own favicon handling instead */ public function set_favicon_handler($page = false, $qs = 'i') { trigger_error('Favicon handling has been removed, please use your own handling', \E_USER_DEPRECATED); return false; } /** * Get the favicon for the current feed * * @deprecated Use your own favicon handling instead */ public function get_favicon() { trigger_error('Favicon handling has been removed, please use your own handling', \E_USER_DEPRECATED); if (($url = $this->get_link()) !== null) { return 'https://www.google.com/s2/favicons?domain=' . urlencode($url); } return false; } /** * Magic method handler * * @param string $method Method name * @param array $args Arguments to the method * @return mixed */ public function __call($method, $args) { if (strpos($method, 'subscribe_') === 0) { trigger_error('subscribe_*() has been deprecated, implement the callback yourself', \E_USER_DEPRECATED); return ''; } if ($method === 'enable_xml_dump') { trigger_error('enable_xml_dump() has been deprecated, use get_raw_data() instead', \E_USER_DEPRECATED); return false; } $class = get_class($this); $trace = debug_backtrace(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection $file = $trace[0]['file']; $line = $trace[0]['line']; throw new SimplePieException("Call to undefined method $class::$method() in $file on line $line"); } /** * Sorting callback for items * * @access private * @param SimplePie $a * @param SimplePie $b * @return boolean */ public static function sort_items($a, $b) { $a_date = $a->get_date('U'); $b_date = $b->get_date('U'); if ($a_date && $b_date) { return $a_date > $b_date ? -1 : 1; } // Sort items without dates to the top. if ($a_date) { return 1; } if ($b_date) { return -1; } return 0; } /** * Merge items from several feeds into one * * If you're merging multiple feeds together, they need to all have dates * for the items or else SimplePie will refuse to sort them. * * @link http://simplepie.org/wiki/tutorial/sort_multiple_feeds_by_time_and_date#if_feeds_require_separate_per-feed_settings * @param array $urls List of SimplePie feed objects to merge * @param int $start Starting item * @param int $end Number of items to return * @param int $limit Maximum number of items per feed * @return array */ public static function merge_items($urls, $start = 0, $end = 0, $limit = 0) { if (is_array($urls) && sizeof($urls) > 0) { $items = []; foreach ($urls as $arg) { if ($arg instanceof SimplePie) { $items = array_merge($items, $arg->get_items(0, $limit)); } else { trigger_error('Arguments must be SimplePie objects', E_USER_WARNING); } } usort($items, [get_class($urls[0]), 'sort_items']); if ($end === 0) { return array_slice($items, $start); } return array_slice($items, $start, $end); } trigger_error('Cannot merge zero SimplePie objects', E_USER_WARNING); return []; } /** * Store PubSubHubbub links as headers * * There is no way to find PuSH links in the body of a microformats feed, * so they are added to the headers when found, to be used later by get_links. * @param \SimplePie\File $file * @param string $hub * @param string $self */ private function store_links(&$file, $hub, $self) { if (isset($file->headers['link']['hub']) || (isset($file->headers['link']) && preg_match('/rel=hub/', $file->headers['link']))) { return; } if ($hub) { if (isset($file->headers['link'])) { if ($file->headers['link'] !== '') { $file->headers['link'] = ', '; } } else { $file->headers['link'] = ''; } $file->headers['link'] .= '<'.$hub.'>; rel=hub'; if ($self) { $file->headers['link'] .= ', <'.$self.'>; rel=self'; } } } /** * Get a DataCache * * @param string $feed_url Only needed for BC, can be removed in SimplePie 2.0.0 * * @return DataCache */ private function get_cache($feed_url = '') { if ($this->cache === null) { // @trigger_error(sprintf('Not providing as PSR-16 cache implementation is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache()".'), \E_USER_DEPRECATED); $cache = $this->registry->call(Cache::class, 'get_handler', [ $this->cache_location, $this->get_cache_filename($feed_url), Base::TYPE_FEED ]); return new BaseDataCache($cache); } return $this->cache; } } class_alias('SimplePie\SimplePie', 'SimplePie');

A Beginner’s Facts Playing Casino Slots

BDM June 26, 2025 Betting for all Leave a comment 1,466 Views

How In Order To Play Slots Find Out The Rules Involving Slot Machines

Content

Slot Suggestion 4: Always Perform Within Your Price Range And Be Willing To Lower Your Wager Or Stop Enjoying If You Hit A Limit
Beginners Guide: How To Be Able To Play Slots For Dummies
Slot Tournaments
How To Participate In Slot Machines Online: Step By Stage Instructions For Beginners
Top Payment Approaches Available On Share Casino
Are There Diverse Types Of Slot Machines?
How To Enjoy Slot Machines In A Casino
How To Play Slot Machine Game Machines: A Step By Step Guide
How Developers Found Techniques To Increase Jackpots
Slot Tip 10: Take Advantage Of Bonuses In Addition To Promotions
What Takes Place When You” “Earn On A Slot Machine?
What Is Responsible Video Gaming And What Makes It Important?
Starting To Play Slots
How To Experience Slots: The Pokernews Guide
Find Your Web Slots Casino
Paylines
Understanding Slot Machines
The Future Of Traditional Casino Gambling
How To Try Out Casino Slots For Beginners
Gambling Help
Can I Play Online Slots For Cost-free?
How To Play Free Of Charge Slots To Succeed Real Money
For Progressive Slots
Betting
Top Online Poker Rooms
Basic Sport Concepts
Evoplay Unveils Tree Of Light: Fabled Fruits, An Exilerating Fantasy Slot Adventure
Bonus Features
Tips For Playing Slot Machine Machines
Progressive Jackpot Slots

In most modern devices, the number regarding lines that will pay off for” “a gamer depends on the particular number of credits (money or coin-in) wagered on a new particular spin. Those first machines will be paid out based about the mechanical features of the device. However, modern equipment not merely often employ video reels yet also make full use of random number generators instead of mechanical operation to determine champions.

The strategy of progressive jackpots dates back to be able to 1986 when the particular Megabucks machine seemed to be introduced, allowing earnings to accumulate until the player hit the jackpot. Today, many popular progressive slot machines are connected around multiple casinos, more increasing the jackpot feature potential. Classic slot machines, often referred to be able to as 3-reel slot machine games, provide quick plus satisfying action. These games are great for players who appreciate easy and fast-paced game play. With their standard design and mechanics, classic slots charm to both newbies and seasoned gamers. Typically, these slot machines feature one to three paylines, making them easy in order to understand and enjoy.

Slot Tip 4: Always Enjoy Within Your Budget And Become Willing To Lower Your Guess Or Stop Playing If You Struck A Limit

Bets can be as minimal as 1c each spin, playing with your local on line casino or online is usually easier than at any time to access your bank roll. Modern slot” “equipment games trace to large and unique machines manufactured by an enthusiastic mechanic (and tinkerer) of typically the late 19th millennium, Charles Fey. The machine that Fey created was very simple but complex in concept, and also this machine was the Liberty Bell. Note that these online slot machine game strategies work finest with games that have the lowest volatility since you will need to adjust the dimensions of the gamble as you proceed. Scatter symbols are usually special icons of which can fork out irregardless of their place on the reels, often triggering reward features mostbet.

It’s quick to customize amount of credits you’d like to participate in too.
Because of the long odds, seeking to win a huge jackpot is most likely unrealistic.
You’ll learn what to be able to expect and exactly how to adjust your current playing style to be able to the features of a particular slot device game.
For example, the Blood Suckers slot with the RTP of 98% returns to all players $98 of $100 expended inside; $2 is usually the house edge.
Therefore, carry out not rush to immediately place actual bets, but initial, get accustomed to the position controls.

Now, your house edge will vary with respect to the” “video game that players opt to play, and typically the total bet amount which is placed. Developers are continually striving to innovate and even create new ways for players to be able to win in a great attempt to retain player interest. One of those innovations seemed to be respins or cascading down symbols – which in turn are certain emblems which cause reels to respin to produce bigger wins or multipliers with outrageous symbols potentially. With all the success and recognition, there is usually one thing which includes always been some sort of given for position machines. In essence, they have been income generators regarding casinos for several years in spite of featuring large plus relatively frequent affiliate payouts. Once you’ve set your desired bet, press the “Spin” button or draw the lever (if available) to trigger the spin.

Beginners Guide: How To Play Slots Regarding Dummies

Keeping with the straightforward nature of playing slots at on the web casinos, if gamers have trouble, these types of websites offer consumer service. The special offers that online casinos offer purely relate with in-game aspects such as bonus money in addition to free spins for slots. The appeal of slot machines is the possiblity to hit big which has a jackpot payday. Over the years, developers have continued to find ways to boost the jackpots regarding players without stopping too much of the edge for your casino.

The most realistic strategy when betting on slot machines is bankroll management; its essence is usually rather simple. Each player can devote a certain amount on bets, in addition to spending it within one evening is a bad concept; a wise option is to split your bankroll volume into several parts. For example, following making a deposit, you can divide it into components simultaneously and use only one piece per day for making bets mostbet app.

Slot Tournaments

Today almost all progressives are linked electronically to other machines, with all credit played in the particular linked machines adding to a typical jackpot. Woe will be the person who hits three jackpot symbols about a buy-a-pay together with only one gold coin played — typically the player gets practically nothing back. On some sort of multiplier, payoffs are proportionate for each coin played — apart from, usually, for that leading jackpot.

Their slots selection includes progressive jackpot feature games, as well as a massive selection of all traditional slots you’d count on to find.
This is because slot games can be highly addicting and can prospect a player to chase their losses.
Nowadays, known because a philanthropist, Bill Redd (also referred to as Si) was among the Bally group’s designers in the 1971s.
With all the achievement and popularity, there will be one thing that has always been a new given for slot machine machines.

The wide collection of slot games, like exclusive titles, guarantees a varied plus exciting gaming knowledge. Here are many of the most effective online casinos for slot machine machines and precisely what causes them to be stand out there. A Night Using Cleo transports gamers to the planet of Ancient Egypt, complete with icons such as scarab beetles and the Eye of Horus. This game holds out for its unique bonus models, which add a great extra layer associated with excitement to the gameplay. Players can easily also make use of the chance feature, that allows all of them to attempt in order to double their winnings after any effective spin.

How To Play Slot Machines On-line: Step By Phase Instructions For Beginners

Among other things, site visitors will discover a day-to-day dose of content articles with the newest poker news, reside reporting from tournaments, exclusive videos, podcasts, reviews and bonus deals and so much more. With these kinds of eligibility factors and even any others you might find, your best choice is always in order to game details or even information before a person commit to enjoying. Sean Chaffin can be a longtime freelance article writer, editor, and former high school writing teacher. If you ever feel it’s learning to be a problem, urgently speak to a helpline in your country for immediate” “assistance. From in-depth testimonials and helpful guidelines to the latest reports, we’re here to be able to help you find a very good platforms and create informed decisions every step of the particular way.

They had been featuring three” “re-writing reels operated by way of a handle and a new single slot to be able to place a coin into. This equipment had only one shell out line, with each and every reel featuring several symbols – many you would acknowledge today – spades, hearts, diamonds, a new horseshoe, and the bell. This method requires players to be able to be more involved with every earn, so having some sort of calculator close by is recommended. Instead of changing the particular size of the particular bet based in won or lost rounds, the method has a set bet determined being a percentage of typically the available balance. Using 5% can become convenient, but all of us prefer staying secure and only wagering 3%. Slot machines top the record with regards to the almost all attractive casino game titles for gamblers, the two online and in land-based casinos.

Top Payment Procedures Available On Stake Casino

This feature means that you can spin a slot machine game game without seeking to connect to the particular game, but you is going to take care to be able to ensure you’re not really spending too much per spin. Wilds usually are special symbols that can replace other symbols on paylines to generate benefits. They are typically the most crucial symbols in the particular game and may also sometimes induce bonus features.

Additionally, players could unlock bonus capabilities through scatter signs” “that trigger special features.
If a person start thinking, “Well, they’re only credit, ” or even, “They’re already paid out for, ” it’s harder to persuade yourself to guard your bankroll.
At the core involving every authentic internet gambling platform is gaming software.
Players may also withdraw their funds by hitting “Cash Out and about. ” An individual can will certainly then receive a paper voucher together with the balance amount that can become used in another machine.

The user interface is definitely crafted to mirror the appearance and even ambiance of the conventional gambling establishment, featuring intuitive selections and controls. Volatility measures the frequency as well as the size regarding the wins that will the slots spend. For example, in case you prefer big is the winner less often, then you will want to perform an increased volatility slot; in case you prefer a low volatility slot then an individual will get smaller sized, more frequent is the winner. Commonly, this symbol is very totally different from the other symbols, therefore it is easy to distinguish besides making it simpler to understand the gameplay. Depending how many you obtain, could be dependent about the reward an individual are given; but like always, this may also vary per game.

Are There Different Types Of Slot Machines?

That about wraps upward our How in order to Play Slot Devices for Beginners guidebook. If you’ve appreciated it and are ready to try many free slots with regard to yourself, check out our slot reviews web page now. After a new few spins about those, you’ll grasp all of the particular concepts you’ve figured out about here. Paylines often confuse starter slots players the most, and no Exactly how to Play Slot machine Machines for Beginners guide would be full without explaining all of them further. Each symbol has a different worth and exactly how much you win for making combinations will be identified by the value of the symbols.

Don’t forget to be able to carefully experience almost all of the great print, because a few terms & situations can limit claiming, usage or cashing out of bonuses.
First, you should note that you can always find out exactly what bonus rounds and even special features the game has by viewing the paytable.
The goal with this specific strategy for earning at slots is usually to win back our losses.
Slot machines have are available a long approach since being simple machines and actually their role since store vending equipment.
Once you’ve established your desired gamble, press the “Spin” button or draw the lever (if available) to initiate the spin.

He’s written several books, generally on the topics of card counting and the different blackjack systems they employed over the particular years. He in addition runs a effective YouTube channel wherever he showcases various blackjack scenarios with beginner tips about how to overcome the dealer. Bets can be since little as 1c compared to typically the common minimum levels of $5 in order to $10 that stand and card games require.” “[newline]Please note that Slotsspot. com doesn’t work any gambling companies.

How To Play Slot Machines Inside A Casino

Bonus rounds can befuddle some new participants, so we believed we’d describe all of them here so that this specific How to Play Slot Machines intended for Beginners piece will be complete. When the cheats inserted particular numbers of coins in a certain order, the device would fork out. In jurisdictions with licensed casinos, the law takes a very dim view of cheating the video poker machines. Cheating licensed casinos is a criminal offence and will carry stiff prison terms. A zero-bonus balances the particular possibility of greater wins than you see in pick’em bonuses.

Over in britain, they include a couple of names for all of them, fruit machines in England and puggy in Scotland.
They are created to offer the chance-based, easy-to-play video gaming experience where gamers” “can go back home with potentially big wins using a simple rewrite.
However, you may stick to certain rules when playing particular titles; by using them, you could decrease risks and boost your winning possibilities.
The bonus round is usually activated by way of a minimum of three scatter symbols – but this can easily vary slot in order to slot.
Just such as the relaxed nature of how to play slot machines, players from all over have similar carefree love towards online game.

A gamer has numerous game titles available, something intended for every taste plus interest. However, whilst we can’t inform you how in order to play slot devices and win every time, we can show a couple of slot machine techniques that will assist you win more often. This is knowledge we’ve gained above decades, so bring it in and create sure you realize that before choosing which usually game to enjoy. Some slot machines in the 1960s and ‘70s had been vulnerable to ordinary magnets. Cheaters could make use of the magnets in order to make the fishing reels float freely alternatively of stopping about a spin.

How To Play Position Machines: A Step By Step Guide

Usually, classic, fruits, 3D, and progressive jackpot slot equipment are available with all online internet casinos. Old-fashioned slot equipment have only one horizontal payline, along which in turn three winning emblems (usually fruit icons or 7s) have to line upwards for you to be paid out. The vast bulk of today’s position machines, however, are multi-payline, with a few featuring up to 100 paylines or more.

So, let’s say that we all start with $100, which usually means our 1st bet is 3%.
It works generally the same manner regarding all slot devices, although there may become some variations based on the application developer.
These are the added features that assist to boost your payout in the particular game.
There is enough diversity and choice available amongst the slot machine game games industry.
“Each game comes with a unique combo of features like bonus rounds, thrilling varied animation alternatives, modern machines, multiplier machines, wild icons, and more.

The risk is that a new dry run can lead to a large bet that may be difficult in order to sustain. Some slot machine games feature progressive jackpots, where a small portion of each and every bet contributes to be able to a growing goldmine that can always be won by getting a specific combo or at unique. Find out about slot machines, how that they work and how to play slots for actual money with our own full guide.

How Developers Found Ways To Increase Jackpots

The worst factor you can apply at slot machines is always to chase loss by increasing the bet level. The chances are good that you may lose a lot more cash, and probably crazily run through the bankroll. When selecting an ideal bet level for your slot play, your decision is usually a trade-off among risk and payment.

The machine became known as the Liberty Bell and Fey spawned an evergrowing industry.
There are video games in penny, 2-cent, nickel, 10-cent, 1 fourth, dollar and also $100 denominations, and several machines allow players in order to choose which denomination they want to be able to use.
Nearly everyone is guilty associated with not reading Apple or Google words of service, but you shouldn’t are available to a casino with that same mindset.
The slot machine machine landscape has always been dependent upon the improvements and innovations involving software companies.
These slots are normally great for players who just want to have many fun create typically the most of their particular play.

It’s important to read the cup or help menus and learn precisely what type of device it is. The three major forms of reel-spinning slot machines are the multiplier, the buy-a-pay along with the progressive. Modern movie slots, of program, don’t have real coins but instead use virtual bridal party. To period pay-out odds, simply cash out your own slot credits straight into a real money balance. If you’re gunning for the big bucks, on the other hand, you would end up being wise to stick to high volatility slots.

Slot Hint 10: Take Benefit Of Bonuses And Even Promotions

In typically the rest, the recognition of attempting to be able to win at slot machines is surging to the point slot machine game play is rivaling table play. On those machines, the particular big payoffs have been $50 or $100 — not like typically the big numbers slot machine game players expect today. On systems of which electronically link equipment in several casinos, progressive jackpots reach huge amount of money. It’s quick — just drop coins into typically the slot and push the button or even pull the handle. Newcomers will find the particular personal interaction along with dealers or additional players at the particular tables intimidating — slot players prevent that. And besides, the greatest, most lifestyle-changing jackpots in typically the casino are available upon the slots.

The game software giant incorporated a 4-tier progressive goldmine with levels called mega, major, slight, and mini. In order to be eligible for the tiny jackpot – the lowest of the bunch, you must bet at least 1 cent on all twenty-five paylines (a minimal total of $0. 25). When this comes to video slots, these generally include multi-tier accelerating jackpots. Every video clip slot usually provides between 2 plus 12 progressive goldmine levels, and every level provides a established max bet an individual have to help to make in order to be able to be eligible.

What Occurs When You” “Get On A Slot Machine?

Each slot machine features a pay stand that shows just what symbols have to line up for a pay out of varying sums. These are organized with the greatest payouts, known because the jackpot, on top of the tables and subsequent payouts below those. A desk also includes an amount paid relying on the amount of credits a new player puts in the machine. A random number generator, or perhaps RNG, is a computer technology that is definitely used to determine payouts and jackpots. An RNG makes a sequence associated with simulated random amounts to determine exactly where those reels may land, and therefore which payouts” “are distributed to participants. Modern slot equipment have become high-tech machines with advanced online video, sound, graphics, in addition to gameplay.

So, you should recognize that playing slot machine machines are extremely basic – which is part of the reason players love these games.
Ordinarily, a traditional 3-reel slot will be an ideal opt for for the player who else likes a pared-down game with not any frills and everything perform.
For example, if you owned four matching emblems on reels one, two, four, in addition to five, and some sort of wild landed throughout the middle, you’d have a 5 symbol combination.
Usually, classic, fruit, 3D, and progressive jackpot slot machines are available from all online casinos.
You can typically do this inside the ‘account’ or ‘banking’ section of your own casino.

The scam artists would likely remove the magnetic only when the fishing reels had aligned throughout a winning combo. My top slot machine game machine strategy ideas – you’ll learned about below – consist of 12 do’s and even 6 don’ts that may assist you in answering the top ‘how to succeed at slot machines? Changing the developed payback percentage demands opening the device and replacing a computer chip. Server-based slot machines that will allow casinos in order to change payout proportions remotely, but there are still polices around making these kinds of changes. It’s certainly not unusual to proceed 20 or fifty or more draws without a one payout on a reel-spinning slot, although payouts tend to be more repeated on video video poker machines. Nor would it be unusual for a device to pay again 150 percent or more for many dozen pulls.

What Is Responsible Game Playing And What Makes It Essential?

Given that they are games of chance, playing slots has more to perform with luck as compared to strategy. Even so, there are several strategies you can employ to select some sort of slot machine that may likely pay. As you might have got heard before, a person can’t win large payouts at a intensifying slot if you don’t max the wager. A small section of your bet on a modern slot machine game goes straight into a jackpot or perhaps set of jackpots. The more participants wager on typically the progressive lot the bigger its jackpot gets.

Not all machines are made the similar way and programmed with the same RTP or payment percentage.
To place a bet on the slot machine, simply insert the coins or currency, select your bet size, and take the lever or perhaps press the rotate button.
Alternatively, you can start building up a bankroll by keeping aside small amounts through your savings and after that begin gambling after getting saved enough money for a certain variety of slot machines.
Let’s consider a closer look at the sorts of bonus icons you’re more likely to find in a regular online” “slot.

Other accelerating slots are connected within a casino, although some are interconnected across all internet casinos featuring that certain game. For a new genuine casino experience from the coziness of your abode, live dealer games certainly are a must consider. These games, including live blackjack, different roulette games, and baccarat, feature real human retailers who interact along with players via reside video streams. Players can participate in current gameplay, detailed with interpersonal interaction, creating a great immersive and genuine casino atmosphere. They” “come in various themes and give a stimulating blend of gameplay, visuals, plus the possibility for significant winnings. Demo methods are available regarding players to train and even familiarize themselves along with the game with out risking real cash.

Starting In Order To Play Slots

Yes, due to the fact demo versions permit you to test slots, check their particular characteristics, and do not risk your own funds. While wagering, it is essential to control yourself, while emotions often usually tend to get free from control. It is incredibly common when you strike a large reward and lose manage, forgetting about caution as well as the strategy you adhere to. Aside coming from these run-of-the-mill strategies, participate in slot machine tournaments whenever feasible.

Understanding design and even mechanics in the sport is essential ahead of spinning the fishing reels.
Don’t hesitate in order to ask tough queries; other gamblers are usually willing to out a poor apple.
The scam artists would remove the magnet only if the reels had aligned within a winning mixture.
Video slots are acknowledged for their advanced graphics and several paylines, which will enhance the chances regarding winning.
The paytable also shows the value of every symbol, indicating the amount you win intended for matching different icons on a payline.

When playing video poker machines online, you could decrease or raise your stake by simply clicking on typically the BET/STAKE button. For example, classic on the internet slots based about traditional slot equipment have 3 reels. Three-reel slot games put more importance on their leading jackpots but have got a lesser hit regularity with additional losing spins. If you’re pondering how to win at slots, three-reel position games do offer slot players typically the best possiblity to get big, but additionally the particular best chance in order to lose fast. Every good online gambling establishment will have an array of games to attempt at no cost or true money.

How To Experience Video Poker Machines: The Pokernews Guide

The microprocessors driving today’s machines are set with random-number generation devices that govern winning combinations. Many position players pump money into two or more adjacent devices at a time, although if the casino will be crowded and others are having problems finding places to play, limit yourself to one machine. Select your bets and paylines, and get a theme and bonus feature of which interests you. Online slot software will be governed by the Arbitrary Number Generator, or perhaps RNG. As quickly as you struck the ‘Spin’ key, an algorithm can determine where and if the reels can stop. The process is completely unique, and slot designers have their games examined before they hit the casino industry, along with periodically audited with time.

This network impact results in massive jackpots, some of which can become truly life-changing.
While learning how in order to play casino slot machine games, there are particular factors that you have to always keep in mind when choosing the proper slot machine game game.
Added for the paylines and payout structures, deciphering the bet measurements is likewise crucial, as it can have an effect on both the possible winnings and the particular overall game.
You may well also get a feeling whether it’s achievable to win in slot games and even if so how to win in slots.

Now, a new payout and goldmine is determined as quickly as the player hits the switch to spin the particular reels. If you’re purely after massive jackpots, you ought to consider playing the subsequent games. These top rated progressive jackpot slots have paid out many of the greatest online slot jackpots of all time.

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A Beginner’s Facts Playing Casino Slots

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Starting In Order To Play Slots

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A Beginner’s Facts Playing Casino Slots

How In Order To Play Slots Find Out The Rules Involving Slot Machines

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