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<?php
/**
* Feed API: WP_Feed_Cache_Transient class
*
* @package WordPress
* @subpackage Feed
* @since 4.7.0
*/
/**
* Core class used to implement feed cache transients.
*
* @since 2.8.0
* @since 6.7.0 Now properly implements the SimplePie\Cache\Base interface.
* @since 6.9.0 Switched to Multisite's global cache via the `*_site_transient()` functions.
*/
#[AllowDynamicProperties]
class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
/**
* Holds the transient name.
*
* @since 2.8.0
* @var string
*/
public $name;
/**
* Holds the transient mod name.
*
* @since 2.8.0
* @var string
*/
public $mod_name;
/**
* Holds the cache duration in seconds.
*
* Defaults to 43200 seconds (12 hours).
*
* @since 2.8.0
* @var int
*/
public $lifetime = 43200;
/**
* Creates a new (transient) cache object.
*
* @since 2.8.0
* @since 3.2.0 Updated to use a PHP5 constructor.
* @since 6.7.0 Parameter names have been updated to be in line with the `SimplePie\Cache\Base` interface.
*
* @param string $location URL location (scheme is used to determine handler).
* @param string $name Unique identifier for cache object.
* @param Base::TYPE_FEED|Base::TYPE_IMAGE $type Either `TYPE_FEED` ('spc') for SimplePie data,
* or `TYPE_IMAGE` ('spi') for image data.
*/
public function __construct( $location, $name, $type ) {
$this->name = 'feed_' . $name;
$this->mod_name = 'feed_mod_' . $name;
$lifetime = $this->lifetime;
/**
* Filters the transient lifetime of the feed cache.
*
* @since 2.8.0
*
* @param int $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours).
* @param string $name Unique identifier for the cache object.
*/
$this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $name );
}
/**
* Saves data to the transient.
*
* @since 2.8.0
*
* @param array|SimplePie\SimplePie $data Data to save. If passed a SimplePie object,
* only cache the `$data` property.
* @return true Always true.
*/
public function save( $data ) {
if ( $data instanceof SimplePie\SimplePie ) {
$data = $data->data;
}
set_site_transient( $this->name, $data, $this->lifetime );
set_site_transient( $this->mod_name, time(), $this->lifetime );
return true;
}
/**
* Retrieves the data saved in the transient.
*
* @since 2.8.0
*
* @return array Data for `SimplePie::$data`.
*/
public function load() {
return get_site_transient( $this->name );
}
/**
* Gets mod transient.
*
* @since 2.8.0
*
* @return int Timestamp.
*/
public function mtime() {
return get_site_transient( $this->mod_name );
}
/**
* Sets mod transient.
*
* @since 2.8.0
*
* @return bool False if value was not set and true if value was set.
*/
public function touch() {
return set_site_transient( $this->mod_name, time(), $this->lifetime );
}
/**
* Deletes transients.
*
* @since 2.8.0
*
* @return true Always true.
*/
public function unlink() {
delete_site_transient( $this->name );
delete_site_transient( $this->mod_name );
return true;
}
}