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get_defined_functions

PHP function Edit on GitHub ✎

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

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.

Feature-8-5-0

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

get_defined_functions() example

php

<?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:

output

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
        )

)