interface_exists
(PHP 5 >= 5.0.2)
interface_exists — Checks if the interface has been defined
Description
bool interface_exists
( string $interface_name
[, bool $autoload
] )
Parameters
-
interface_name
-
The interface name
-
autoload
-
Whether to call __autoload or not by default
Return Values
Returns TRUE if the interface given by
interface_name
has been defined, FALSE otherwise.
Examples
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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