method_exists

(PHP 4, PHP 5, PHP 7)

method_exists — Checks if the class method exists

method_exists ( string|object $object , string $method_name ) : bool

Checks if the class method exists in the given object.

Returns true if the method given by method_name has been defined for the given object, false otherwise.

Note:

Using this function will use any registered autoloaders if the class is not already known.

Example #1 method_exists() example

<?php
$directory = new Directory('.');
var_dump(method_exists($directory,'read'));
?>

The above example will output:

bool(true)

Example #2 Static method_exists() example

<?php
var_dump(method_exists('Directory','read'));
?>

The above example will output:

bool(true)