Description:
------------
spl_autoload_register

Loading order 

Test script:
---------------
A0Class.php
<?
namespace TESTING;

use TESTING\BClass;
class A0Class extend BClass{

}

A1Class.php
<?
namespace TESTING;

use TESTING\BClass;
class A1Class extend BClass{
}

BClass.php
<?
namespace TESTING;

use TESTING\BClass;
class BClass{

     public function __construct(){
         echo "Child Start";
     }
}

Bootstrap.php
<?php
namespace TESTING;

class Bootstrap {
	
	private static $classes = array ();
	
	public static function init() {
		
		Bootstrap::requireOnce ( __DIR__ );
		
		Bootstrap::loadClass ();
	}
	
	public static function getClasses() {
		
		return Bootstrap::$classes;
	}
	
	private static function requireOnce($path) {
		
		foreach ( scandir ( $path ) as $object ) {
			
			if ($object != '.' && $object != '..') {
				
				$object = $path . DIRECTORY_SEPARATOR . $object;
				
				if (is_file ( $object ) && file_exists ( $object )) {
					if (preg_match ( '/\.php$/', $object ) && ! preg_match ( '/Bootstrap\.php$/', $object ) && 
! preg_match ( '/testFile\.php$/', $object )
&& !in_array()) {
						Bootstrap::$classes [] = $object;
					}
				
				} else if (is_dir ( $object )) {
					
					Bootstrap::requireOnce ( $object );
				
				}
			}
		}
	}
	
	private static function loadClass() {
		
		for($i = 0; $i < count ( Bootstrap::$classes ); $i ++) {
			
			require_once Bootstrap::$classes [$i];
		}
	}
}

spl_autoload_register ( array ('TESTING\Bootstrap', 'init' ) );

testFile.php
<?php

require_once 'lib/Bootstrap.php';

use TESTING\A0Class;

$a0 = new A0Class();



Expected result:
----------------
Child Start

Actual result:
--------------
Fatal error: Class 'TESTING\BClass' not found