When I first heard about PHP class autoloader, I thought “I might be a huge mechanism”.

But in reality, class autoload is a very simple thing and it’s just a function.
Earlier we used __autoload() function but now it is deprecated on PHP 7.2. So we’ll use spl_autoload_register()

function my_autoloader($class) {
    include 'classes/' . strtolower( $class ) . '.php';
}
spl_autoload_register('my_autoloader');

It will load all the classes from the project. But what if, we want to load specific classes, which are in the /classes folder?
“We need to use namespace for those classes.”