* @param mixed $data The data to add to the cache store
* @param string $group The group to add the cache to
* @param int $expire When the cache data should be expired
- * @return unknown
+ * @return bool False if cache key and group already exist, true on success
*/
function wp_cache_add($key, $data, $group = '', $expire = 0) {
global $wp_object_cache;
* @uses $wp_object_cache Object Cache Class
* @see WP_Object_Cache::flush()
*
- * @return bool Always returns true
+ * @return bool False on failure, true on success
*/
function wp_cache_flush() {
global $wp_object_cache;
* @param mixed $data The contents to store in the cache
* @param string $group Where to group the cache contents
* @param int $expire When to expire the cache contents
- * @return bool False if cache key and group already exist, true on success
+ * @return bool False if not exists, true if contents were replaced
*/
function wp_cache_replace($key, $data, $group = '', $expire = 0) {
global $wp_object_cache;
* @param mixed $data The contents to store in the cache
* @param string $group Where to group the cache contents
* @param int $expire When to expire the cache contents
- * @return bool False if cache key and group already exist, true on success
+ * @return bool False on failure, true on success
*/
function wp_cache_set($key, $data, $group = '', $expire = 0) {
global $wp_object_cache;