get_parent_class
As far as I remember interface_exists() was added in 5.0.2 . In 5.0.0 and 5.0.1 class_exists() used to return TRUE when asked for a existing interface. Starting 5.0.2 class_exists() doesn't do that anymore.
interface_exists
(PHP 5 >= 5.0.2)
interface_exists — Checks if the interface has been defined
Popis
bool interface_exists ( string $interface_name [, bool $autoload] )Checks if the given interface has been defined.
Seznam parametrů
- interface_name
The interface name
- autoload
Wether to call __autoload or not by default
Návratové hodnoty
Returns TRUE if the interface given by interface_name has been defined, FALSE otherwise.
Příklady
Příklad 281. interface_exists() example
<?php
// Check the interface exists before trying to use it
if (interface_exists('MyInterface')) {
class MyClass implements MyInterface
{
// Methods
}
}
?>
Viz také
| class_exists() |
add a note
User Contributed Notesinterface_exists
andrey at php dot net
24-Oct-2004 04:40
24-Oct-2004 04:40