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): arrayGets an array of all defined functions.
Parameters
-
exclude_disabled -
Whether disabled functions should be excluded from the return value.
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 $arr["user"] (see example below).
Changelog
| Version | Description |
|---|---|
| 8.0.0 |
The default value of the exclude_disabled parameter
has been changed from false to true.
|
| 7.0.15, 7.1.1 |
The exclude_disabled parameter has been added.
|
Examples
Example #1 get_defined_functions() example
<?php
function myrow($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
)
)
See Also
- function_exists() - Return true if the given function has been defined
- get_defined_vars() - Returns an array of all defined variables
- get_defined_constants() - Returns an associative array with the names of all the constants and their values
- get_declared_classes() - Returns an array with the name of the defined classes
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