interface_exists
interface_exists
(PHP 5 >= 5.0.2, PHP 7)
interface_exists — Checks if the interface has been defined
Description
bool interface_exists ( string $interface_name [, bool $autoload = true ] )
Checks if the given interface has been defined.
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
}
}
?> See Also
- get_declared_interfaces() - Returns an array of all declared interfaces
- class_implements() - Return the interfaces which are implemented by the given class or interface
- class_exists() - Checks if the class has been defined
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.interface-exists.php
