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.
Vrátené hodnoty
Returns TRUE if the interface given by interface_name has been defined, FALSE otherwise.
Príklady
Example#1 interface_exists() example
<?php
// Check the interface exists before trying to use it
if (interface_exists('MyInterface')) {
class MyClass implements MyInterface
{
// Methods
}
}
?>
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User Contributed Notesinterface_exists
andrey at php dot net
24-Oct-2004 04:40
24-Oct-2004 04:40