PHP Manual: Checks if the class method exists

bool method_exists ( mixed $object , string $method_name )

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)

method_exists