PHP Dokumentation: Function interface-exists
12. Januar 2010 von werner
interface_exists
(PHP 5 >= 5.0.2)
interface_exists — Checks if the interface has been defined
Beschreibung
bool interface_exists ( string $interface_name [, bool $autoload = true ] )
Checks if the given interface has been defined.
Parameter-Liste
- interface_name
The interface name
- autoload
Whether to call __autoload or not by default.
Rückgabewerte
Returns TRUE if the interface given by interface_name has been defined, FALSE otherwise.
Beispiele
Beispiel #1 interface_exists() example
<?php
// Check the interface exists before trying to use it
if (interface_exists('MyInterface')) {
class MyClass implements MyInterface
{
// Methods
}
}?>Siehe auch
- class_exists() – Checks if the class has been defined
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