There is a problem after modifying the default configuration of ThinkPHP5.0

Question

Make the following modifications according to the teacher’s tutorial:

<?php

namespace app\index\controller;

class Index

{

public function index()

{

return 'PHP Chinese website';

}

}

Change After that, when I enter the domain name of the virtual host in the address bar of the page, it still shows the page with the smiley face. What’s going on?

class Index

{

public function index()

{

return 'PHP Chinese website';

}

}