(PHP 5 >= 5.0.2)
interface_exists — Checks if the interface has been defined
$interface_name
[, bool $autoload = true
] )Checks if the given interface has been defined.
Returns TRUE if the interface given by
interface_name has been defined, FALSE otherwise.
Example #1 interface_exists() example
<?php
// Check the interface exists before trying to use it
if (interface_exists('MyInterface')) {
class MyClass implements MyInterface
{
// Methods
}
}
?>