php namespace命名空间

test.php  

<?php
require 'a.php';
require 'b.php';

use a\b\a as A;
use a\c\a as C;
new A();
echo "<hr >";
new C();

 

a文件

<?php
namespace a\b ;

class A{

public function __construct(){
echo "我是a文件";
}
}

 

b文件

<?php
namespace a\c;

class A{
public function __construct(){
echo "我是b文件";
}
}