(PECL bcompiler >= 0.5) Writes all functions defined in a file as bytecodes

(PECL inclued >= 0.1.0) Get the inclued data

(PECL bcompiler >= 0.4) Writes the start pos, and sig to the end of a exe type file

(PECL runkit >= 0.7.0) Runkit Anti-Sandbox Class

(PHP 5 >= 5.5.0, PHP 7, PECL ZendOpcache >= 7.0.0) Resets the contents of the opcode cache

(PECL wincache >= 1.1.0) Checks if a variable exists in the user cache

(PHP 4, PHP 5, PHP 7) Returns an array with the names of the functions of a module

(PECL wincache >= 1.1.0) Retrieves information about data stored in the user cache

(PECL apd 0.2-0.4) Throw a warning and a callstack

(PHP 4, PHP 5, PHP 7) Find out whether an extension is loaded