PHP Function interface_exists()

Syntax

interface_exists ( $interface_name [, $autoload] );

This function checks if the given interface has been defined.

Parameter	Description
interface_name	Required. The interface name
autoload	Optional. Wether to call __autoload or not by default.

Returns TRUE if the interface given by interface_name has been defined, FALSE otherwise.

Following is the usage of this function:

<?php
if (interface_exists('MyInterface')) {
    class MyClass implements MyInterface
    {
        // Methods
    }
}
?>