(PHP 4 >= 4.0.4, PHP 5, PHP 7)
Returns an array of all defined functions
array get_defined_functions ( void )
Gets an array of all defined functions.
Returns:
Returns a multidimensional array containing a list of all defined functions, both built-in (internal) and user-defined. The internal functions will be accessible via $arr["internal"], and the user defined ones using $arr["user"] (see exam