PHP Class Name Alias

<?php
/**
 * https://stackoverflow.com/questions/5861940/is-there-a-way-to-dynamically-change-the-name-of-the-class-being-autoloaded
 */

class Gila_Baby {
  public function __construct() {
    echo 'hai';
  }
}

function autoload($class_name) {
  $real_class_name = 'Gila_' . $class_name;
  class_alias($real_class_name, $class_name);
}

autoload('Baby');

new Baby(); // output: hai