(PECL apc >= 3.1.1) Deletes files from the opcode cache

(PECL apd >= 0.2) Starts the remote session debugging

(PECL uopz >= 1.0.0) Compose a class void

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Restores the previous error handler function

(PECL runkit >= 0.7.0) Dynamically removes the given method

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Gets all configuration options

(PHP 5 >= 5.2.1, PHP 7) Returns directory path used for temporary files

(PHP 4, PHP 5, PHP 7) Gets the inode of the current script

(PECL runkit >= 0.7.0) Convert a base class to an inherited class, add ancestral methods when appropriate

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