get_defined_functions
    (PHP 4 >= 4.0.4)
get_defined_functions -- 
     Returns an array of all defined functions
    
Description
array 
get_defined_functions ( void)
     This function returns an 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 example below).
     
    
     Will output something along the lines of:
     
    
     See also get_defined_vars() and 
     get_defined_constants().