How to set an access password for a web page in php

How to set the password for web page access in php

1. If the password is correct, you can see the specified content. If the password is incorrect, enter No; you need to enter a password when opening and closing the browser for the first time before you can access it. The specific code is as follows:

2. Change the login password. The code is as follows:

3. In addition, you can also log in after logging in. Page, add a "log out" button, and add the following code to the corresponding position on the page:

<a href="?logout" style="color: red;">退出登录</a>

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