PHP Handbuch
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# 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).

    function myrow($id, $data) {
        return "<tr><th>$id</th><td>$data</td></tr>\n";
    }

    $arr = get_defined_functions();

    print_r($arr);

Will output something along the lines of:

    Array
    (
        [internal] => Array
            (
                [0] => zend_version
                [1] => func_num_args
                [2] => func_get_arg
                [3] => func_get_args
                [4] => strlen
                [5] => strcmp
                [6] => strncmp
                ...
                [750] => bcscale
                [751] => bccomp
            )

        [user] => Array
            (
                [0] => myrow
            )

    )

See also get_defined_vars() and get_defined_constants().

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