get_defined_functions

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

get_defined_functions — Returns an array of all defined functions

Description

get_defined_functions(bool $exclude_disabled = true): array

Gets an array of all defined functions.

Parameters

exclude_disabled: Whether disabled functions should be excluded from the return value. This parameter has no effect since PHP 8.0.0.
Warning
This feature has been DEPRECATED as of PHP 8.5.0. Relying on this feature is highly discouraged.

Return Values

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 example below).

Changelog

Version	Description
8.5.0	The `exclude_disabled` parameter has been deprecated, as it no longer has any effect.
8.0.0	The default value of the `exclude_disabled` parameter has been changed from `false` to `true`. However, it will not have any effect as disabled functions are removed from the function table at compile time.
7.0.15, 7.1.1	The `exclude_disabled` parameter has been added.

Examples

Example #1 get_defined_functions() example

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

$arr = get_defined_functions();

print_r($arr);
?>

The above example will output something similar to:

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
        )

)