<?php

// ./fichier_1.php
define('CLASS_DIR', 'class/');
set_include_path(".".PATH_SEPARATOR.CLASS_DIR);

spl_autoload_extensions('.class.php');
spl_autoload_register();

use mon\outil\Test;

$test = new Test();
$test->fonctionne();

//./class/mon/outil/Test.class.php
namespace mon\outil;
class Test
{
    public function __construct()
    {
        echo "Tralala !";
    }
}


?>