php命名空间

//index.xphp
<?php
include('file1.php');
echo project_1\test1::t1();
//调用外部函数
echo project_1\t2();

//使用use重命名命名空间名称
use project_2 as project_3;
echo project_3\test1::t1();

 

//file1.php

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2020/8/1
 * Time: 22:14
 */
namespace project_1;
const INSTANCE=1;

function t2(){

    echo 22;
}
class test1{

    //只能是静态方法
    static function t1(){
        echo 11;
    }



}

namespace project_2;
class test1{

    //只能是静态方法
    static function t1(){
        echo 11;
    }
}