(PECL apcu >= 5.0.0) Get total cache hits

(PECL weakref >= 0.2.0) Returns the value pointed to by a certain object

(PHP 7) Clear the most recent error void error_clear_last

(PECL apc >= 2.0.0) Clears the APC cache

(PECL apd 0.2-0.4) Throw an error, a callstack and then exit

(PECL bcompiler >= 0.4) Reads and creates classes from a bcompiler exe file

(PECL runkit >= 0.7.0) Dynamically changes the name of the given method

(PHP 4, PHP 5) Sets the current active configuration setting of magic_quotes_runtime

(PHP 5, PHP 7) Restores the previously defined exception handler function

(PECL apcu >= 4.0.0) Retrieves cached information from APCu's data store