PHP develops a simple book lending system to create a public web page

In our borrowing system, the HTML in the header is fixed

and does not change as the page jumps.

In order not to write the header code repeatedly, we need to make a head.php file

Write the header HTML code to facilitate calling in each file.

 
 
 
 
 
 
 
 
 首页
 
 网页美工
 
 大数据
 
 asp编程
 
 php编程
 
 软件开发
 
 用户登陆   
 
 
 
 

The user’s logout function is also added here:

 用户登陆   退出"; } ?> 

Make a judgment on the login function page

alert('退出成功！');window.location='landing.php'"; } ?>