qcubed/framework

<?php

    
    /**
     * Cache provider based on APC interface. APC or APCu can be used.
     * APC and APCu are not included in standard PHP, but are easily added with a pecl install.
     */
    class QCacheProviderAPCu extends QAbstractCacheProvider {
        /** @var int The lifetime of cached items. */
        public static $ttl = 86400; // one day between cache drops


        /**
         * Get the object that has the given key from the cache
         * @param string $strKey the key of the object in the cache
         * @return object
         */
        public function Get($strKey) {
            return apcu_fetch($strKey);
        }

        /**
         * Set the object into the cache with the given key
         *
         * @param string $strKey                the key to use for the object
         * @param object $objValue              the object to put in the cache
         * @param int    $intExpireAfterSeconds Number of seconds after which the object has to expire
         *
         * @return void
         */
        public function Set($strKey, $objValue, $intExpireAfterSeconds = null) {
            if(!is_null($intExpireAfterSeconds)) {
                apcu_store ($strKey, $objValue, (int)$intExpireAfterSeconds);
            } else {
                apcu_store($strKey, $objValue, static::$ttl);
            }
        }

        /**
         * Delete the object that has the given key from the cache
         * @param string $strKey the key of the object in the cache
         * @return void
         */
        public function Delete($strKey) {
            apcu_delete($strKey);
        }

        /**
         * Invalidate all the objects in the cache
         * @return void
         */
        public function DeleteAll() {
            apcu_clear_cache('user');
        }
    }