(PHP 4 >= 4.3.0, PHP 5, PHP 7) Gets options from the command line argument list

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Returns the type of interface between web server and PHP

(PHP 4, PHP 5, PHP 7) Prints out the credits for PHP

(PHP 5, PHP 7) Returns a unique identifier for the current thread

(PHP 5 >= 5.3.0, PHP 7) Deactivates the circular reference collector

(PHP 4, PHP 5, PHP 7) Alias of

(PHP 4, PHP 5, PHP 7) Alias of

(PHP 4, PHP 5, PHP 7) Gets the current active configuration setting of magic_quotes_runtime

(PHP 5 >= 5.2.4, PHP 7) Retrieve a path to the loaded php.ini file

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