PHP | class_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 class_exists() Function.

The built-in class_exists() function in PHP checks whether the given class have been defined. This PHP function returns TRUE if class_name is a defined class, otherwise it returns FALSE.

Syntax

Following below is the syntax to use this function -

class_exists ( $class_name [,$autoload] );

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Parameter Details

Sr.No	Parameter & Description
1	class_name(Required) The class name.
2	autoload(Optional) Whether to call __autoload or not by default.

Return Value

This built-in PHP function returns true if the class_name is a defined class, otherwise it returns false.

Example

Try out the below example -

<?php
   if (class_exists('HelloWorld')) {
      $helloworld = new HelloWorld();
   }
?> 

READ: PHP | Class/Object Functions

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 PHP get_class_methods Function.

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