(PHP 5 >= 5.3.0, PHP 7) Deactivates the circular reference collector

(PECL runkit >= 0.7.0) Return numerically indexed array of registered superglobals

(PHP 4, PHP 5, PHP 7) Alias of

(PECL apcu >= 5.0.0) Move pointer to next item

(PECL apd 0.2-0.4) Starts the session debugging

(PECL uopz >= 1.0.0) Extend a class at runtime

(PECL weakref >= 0.2.0) Returns the current key under iteration.

(PECL uopz >= 1.0.0) Delete a function void

(PECL blenc >= 5) Encrypt a PHP script with BLENC.

(PECL uopz >= 1.0.0) Undefine a constant void