(PHP 4, PHP 5, PHP 7) Returns an array with the names of included or required files

(PHP 4, PHP 5, PHP 7) Gets the version of the current Zend engine

(PHP 5 >= 5.2.0, PHP 7) Returns the peak of memory allocated by PHP

(PHP 4, PHP 5, PHP 7) Set/get the various assert flags

(PHP 4, PHP 5, PHP 7) Returns an array with the names of all modules compiled and loaded

(PHP 4, PHP 5, PHP 7) Gets the current PHP version

(PHP 5, PHP 7 >= 5.5.0, PHP 7) Sets the process title

(PHP 4, PHP 5, PHP 7) Sets the value of a configuration option

(PHP 4, PHP 5, PHP 7) Gets the value of an environment variable

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