Php uses cookies to save user login username instances

This article mainly introduces how php uses cookies to save the user's login username. the instance form completely analyzes the tips for saving the user's login name using cookies, for more information about how to use cookies to save user logon usernames, see the example in this article. Share it with you for your reference. The specific implementation method is as follows:

User logon File: login. php

The code is as follows:

User logon


<? Php
Function getCookieUsername (){
If (empty ($ _ COOKIE ['username']) {
Return "";
} Else {
Return $ _ COOKIE ['username'];
}
}
?>

Background File: admin. php

The code is as follows:

<? Php
If (! Empty ($ _ POST ['sub']) & $ _ POST ['username'] = "admin "){
Echo "welcome". $ _ POST ['username']. "logon successful ";
If (! Empty ($ _ POST ['yes']) {
SetCookie ("username", $ _ POST ['username'], time () + 3600*24*30 );
} Else {
SetCookie ("username", "", time ()-10 );
}
} Else {
Echo "your account is incorrect. please enter it again
";
}
Echo "back to login page ";
?>

I hope this article will help you with php programming.