PHP design pattern_the clever use of namespaces

<?php namespace test1;

function test(){
    echo "function test1";
}

<?php namespace test2;

function test(){
    echo "function test2";
}

<?php require_once &#39;test1.php&#39;;
require_once &#39;test2.php&#39;;

test1\test();              //表示使用命名空间1下的test函数
test2\test();

The above introduces the clever use of PHP design pattern_namespace, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.