(PECL apc >= 3.1.1) Move pointer to next item

(PECL apcu >= 4.0.0) Clears the APCu cache

(PECL apd >= 0.2) Overrides built-in functions

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

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Generates a backtrace

(PECL wincache >= 1.1.0) Compares the variable with old value and assigns new value to it

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Return a list of .ini files parsed from the additional ini dir

(PECL runkit >= 0.7.0) Specify a function to capture and/or process output from a runkit sandbox

(PECL apd >= 0.2) Starts the session debugging

(PECL apc >= 3.1.4) Output a binary dump of cached files and user variables to a file