gistfile1.php

//in my config file 
require_once(SITE_DIR . '/class/ClassAutoLoader.php');
$loader = new ClassAutoLoader();


//the autoloader
<?php

class ClassAutoloader {
    public function __construct() {
        spl_autoload_register(array($this, 'loader'));
    }
    private function loader($className) {
        include (SITE_DIR . '/class/' . $className . '.php');
    }
}
?>

/*
Usage: one class per file, name file the same as the class, and the autoloader will load it.
*/