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interface_exists

(PHP 5 >= 5.0.2)

interface_exists -- Checks if the interface has been defined

Descrizione

bool interface_exists ( string interface_name [, bool autoload] )

Checks if the given interface has been defined.

Elenco dei parametri

interface_name

The interface name

autoload

Wether to call __autoload or not by default

Valori restituiti

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

Esempi

Esempio 1. interface_exists() example

<?php
// Check the interface exists before trying to use it
if (interface_exists('MyInterface')) {
    class MyClass implements MyInterface
    {
        // Methods
    }
}

?>

Vedere anche:

class_exists()



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