How to use PHP to verify username and password (code)

The content shared with you in this article is about using PHP to verify user names and passwords. The content is of great reference value and I hope it can help friends in need.

Login page login.html

 用户登录
 
 
 用户名:  
 
 密 码:  
 
  
 
 

Login verification, logout login login.php

用户中心
'; echo '点击此处 注销 登录！
'; exit; } else { exit('登录失败！点击此处 返回 重试'); } //注销登录 if($_GET['action'] == "logout"){ unset($_SESSION['userid']); unset($_SESSION['username']); echo '注销登录成功！点击此处 登录'; exit; } ?>

Login monitoring my.php

'; echo '用户ID：',$userid,'
'; echo '用户名：',$username,'
'; echo '注销 登录
'; ?>

Connect to the database conn.php

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