ru-se.com

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs

class-wp-feed-cache-transient.php (2560B)

      1 <?php
      2 /**
      3  * Feed API: WP_Feed_Cache_Transient class
      4  *
      5  * @package WordPress
      6  * @subpackage Feed
      7  * @since 4.7.0
      8  */
      9 
     10 /**
     11  * Core class used to implement feed cache transients.
     12  *
     13  * @since 2.8.0
     14  */
     15 class WP_Feed_Cache_Transient {
     16 
     17 	/**
     18 	 * Holds the transient name.
     19 	 *
     20 	 * @since 2.8.0
     21 	 * @var string
     22 	 */
     23 	public $name;
     24 
     25 	/**
     26 	 * Holds the transient mod name.
     27 	 *
     28 	 * @since 2.8.0
     29 	 * @var string
     30 	 */
     31 	public $mod_name;
     32 
     33 	/**
     34 	 * Holds the cache duration in seconds.
     35 	 *
     36 	 * Defaults to 43200 seconds (12 hours).
     37 	 *
     38 	 * @since 2.8.0
     39 	 * @var int
     40 	 */
     41 	public $lifetime = 43200;
     42 
     43 	/**
     44 	 * Constructor.
     45 	 *
     46 	 * @since 2.8.0
     47 	 * @since 3.2.0 Updated to use a PHP5 constructor.
     48 	 *
     49 	 * @param string $location  URL location (scheme is used to determine handler).
     50 	 * @param string $filename  Unique identifier for cache object.
     51 	 * @param string $extension 'spi' or 'spc'.
     52 	 */
     53 	public function __construct( $location, $filename, $extension ) {
     54 		$this->name     = 'feed_' . $filename;
     55 		$this->mod_name = 'feed_mod_' . $filename;
     56 
     57 		$lifetime = $this->lifetime;
     58 		/**
     59 		 * Filters the transient lifetime of the feed cache.
     60 		 *
     61 		 * @since 2.8.0
     62 		 *
     63 		 * @param int    $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours).
     64 		 * @param string $filename Unique identifier for the cache object.
     65 		 */
     66 		$this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $filename );
     67 	}
     68 
     69 	/**
     70 	 * Sets the transient.
     71 	 *
     72 	 * @since 2.8.0
     73 	 *
     74 	 * @param SimplePie $data Data to save.
     75 	 * @return true Always true.
     76 	 */
     77 	public function save( $data ) {
     78 		if ( $data instanceof SimplePie ) {
     79 			$data = $data->data;
     80 		}
     81 
     82 		set_transient( $this->name, $data, $this->lifetime );
     83 		set_transient( $this->mod_name, time(), $this->lifetime );
     84 		return true;
     85 	}
     86 
     87 	/**
     88 	 * Gets the transient.
     89 	 *
     90 	 * @since 2.8.0
     91 	 *
     92 	 * @return mixed Transient value.
     93 	 */
     94 	public function load() {
     95 		return get_transient( $this->name );
     96 	}
     97 
     98 	/**
     99 	 * Gets mod transient.
    100 	 *
    101 	 * @since 2.8.0
    102 	 *
    103 	 * @return mixed Transient value.
    104 	 */
    105 	public function mtime() {
    106 		return get_transient( $this->mod_name );
    107 	}
    108 
    109 	/**
    110 	 * Sets mod transient.
    111 	 *
    112 	 * @since 2.8.0
    113 	 *
    114 	 * @return bool False if value was not set and true if value was set.
    115 	 */
    116 	public function touch() {
    117 		return set_transient( $this->mod_name, time(), $this->lifetime );
    118 	}
    119 
    120 	/**
    121 	 * Deletes transients.
    122 	 *
    123 	 * @since 2.8.0
    124 	 *
    125 	 * @return true Always true.
    126 	 */
    127 	public function unlink() {
    128 		delete_transient( $this->name );
    129 		delete_transient( $this->mod_name );
    130 		return true;
    131 	}
    132 }