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] )
Checks if the given interface has been defined.
Parameters
interface_name
The interface name
autoload
Wether 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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