Beiträge von fdfire

php
/**
 * Object Cache API
 *
 * @link https://codex.wordpress.org/Class_Reference/WP_Object_Cache
 *
 * @package WordPress
 * @subpackage Cache
 */


/**
 * Adds data to the cache, if the cache key doesn't already exist.
 *
 * @since 2.0.0
 *
 * @see WP_Object_Cache::add()
 * @global WP_Object_Cache $wp_object_cache Object cache global instance.
 *
 * @param int|string $key    The cache key to use for retrieval later.
 * @param mixed      $data   The data to add to the cache.
 * @param string     $group  Optional. The group to add the cache to. Enables the same key
 *                           to be used across groups. Default empty.
 * @param int        $expire Optional. When the cache data should expire, in seconds.
 *                           Default 0 (no expiration).
 * @return bool False if cache key and group already exist, true on success.
 */
function wp_cache_add( $key, $data, $group = '', $expire = 0 ) {
    global $wp_object_cache;


    return $wp_object_cache->add( $key, $data, $group, (int) $expire );
}


/**
 * Closes the cache.
 *
 * This function has ceased to do anything since WordPress 2.5. The
 * functionality was removed along with the rest of the persistent cache.
 *
 * This does not mean that plugins can't implement this function when they need
 * to make sure that the cache is cleaned up after WordPress no longer needs it.
 *
 * @since 2.0.0
 *
 * @return true Always returns true.
 */
function wp_cache_close() {
    return true;
}


/**
 * Decrements numeric cache item's value.
 *
 * @since 3.3.0
 *
 * @see WP_Object_Cache::decr()
 * @global WP_Object_Cache $wp_object_cache Object cache global instance.
 *
 * @param int|string $key    The cache key to decrement.
 * @param int        $offset Optional. The amount by which to decrement the item's value. Default 1.
 * @param string     $group  Optional. The group the key is in. Default empty.
 * @return false|int False on failure, the item's new value on success.
 */