Autoloading Classes

Class Constants
November 14, 2018
Constructors and Destructors
November 14, 2018

Many developers writing object-oriented applications create one PHP source file per class definition. One of the biggest annoyances is having to write a long list of needed includes at the beginning of each script (one for each class).

In PHP 5, this is no longer necessary. The spl_autoload_register() function registers any number of autoloaders, enabling for classes and interfaces to be automatically loaded if they are currently not defined. By registering autoloaders, PHP is given a last chance to load the class or interface before it fails with an error.

Example #1 Autoload example

This example attempts to load the classes MyClass1 and MyClass2 from the files MyClass1.php and MyClass2.phprespectively.

spl_autoload_register(function ($class_name) {
include $class_name . '.php';
$obj  = new MyClass1();
$obj2 = new MyClass2();

Example #2 Autoload other example

This example attempts to load the interface ITest.


spl_autoload_register(function ($name) {

class Foo implements ITest {

string(5) “ITest”

Fatal error: Interface ‘ITest’ not found in …

Sondiva Technologies
Sondiva Technologies
Sondiva Technologies started in 2011 with a vision of providing Quality based Web Hosting and Web Designing Services in Ghaziabad, Delhi NCR. Backed up by full stack developers and designers , with over 500+ Web Projects. They work on opensource Platforms like Wordpress, Magneto, Prestashop, Opencart and Core PHP. Other services are : Responsive Web Designing Domain Registration Services Dedicated & SSD Hosting Virtual Private Servers Google GSuite Mail Servers E-Commerce Shopping Portal Development Web Designing & Application Courses SEO & Digital Marketing

Leave a Reply

Your email address will not be published. Required fields are marked *

Shop Now