(PHP 5 >= 5.5.5, PHP 7, PECL ZendOpcache > 7.0.2) Get status information about the cache

(PECL weakref >= 0.2.0) Advances to the next map element

(PHP 4, PHP 5, PHP 7) Set/get the various assert flags

(PHP 4, PHP 5, PHP 7) Gets the version of the current Zend engine

(PECL apcu >= 5.1.0) Atomically fetch or generate a cache entry

(PHP 7) Clear the most recent error void error_clear_last

(PECL apc >= 3.0.0) Cache a variable in the data store

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Gets the current include_path configuration option

(PECL runkit >= 0.7.0) Runkit Sandbox Class -- PHP Virtual Machine

(PHP 5 >= 5.2.0, PHP 7) Returns the peak of memory allocated by PHP