实例讲解PHP中使用命名空间

<?php 
 
namespace Dojo;
 
class Ninja
{
 
}

<?php 
 
namespace Training;
 
class Ninja
{
 
}

<?php
 
// require both of our ninja classes
require "Dojo/Ninja.php";
require "Training/Ninja.php";
 
// create a new Ninja in the Dojo namespace
$ninja1 = new Dojo\Ninja();
 
// create a new Ninja in the Training namespace
$ninja2 = new Training\Ninja();

<?php
 
// require both of our ninja classes
require "Dojo/Ninja.php";
require "Training/Ninja.php";
 
use Dojo\Ninja as Ninja;
 
$my_ninja = new Ninja();

use Training\Ninja as Ninja;