PHP Functions Essential Reference

get_defined_functions

array get_defined_functions(void) 

Lists defined functions.

Returns:

Array of functions; FALSE on error

Description:

Gets a list of all defined functions, both internal (in PHP) and user-defined. The function returns an associative array containing two elements, internal and user. The internal element lists all PHP internal functions (which is a very large list); the user element shows all user-defined functions available to the script calling the function.

Availability:

UNIX, Windows

Version:

4.0.4+

Example:

List all functions

<pre> <?php function test_function() { return TRUE; } $funclist = get_defined_functions(); echo "User functions\n"; print_r($funclist['user']); echo "\n\n"; echo "Internal functions\n"; print_r($funclist['internal']); ...