PHP | interface_exists() Function

PHP interface_exists() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP interface_exists() Function.

The PHP interface_exists() Function checks if the given interface has been defined.


Following below is the syntax to use this function -

interface_exists ( $interface_name [, $autoload] );

Parameter Details

Sr.NoParameter & Description


The interface name



Wether to call __autoload or not by default.

Return Value

This built-in PHP function returns TRUE if the interface given by the interface_name has been defined, FALSE otherwise.


Try out the below example -

   if (interface_exists('SomeInterface')) {
      class MyClass implements SomeInterface {
         // Methods

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP is_a() Function.

Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

Follow us on our various social media platforms to stay updated with our latest tutorials. You can also subscribe to our newsletter in order to get our tutorials delivered directly to your emails.

Thanks for reading and bye for now.