在PhP中重定向循环

Question

This is the part that redirects in the "login.php" file.

if(isset($_SESSION['user'])){
    if($_SESSION != ''){
        header("Location: home.php");
    }
}

This redirects from "home.php" file.

if(!isset($_SESSION['user'])){
    header("Location: login.php");
}
if($_SESSION['user'] == ''){
    header("Location: login.php");
}

How does this loop?

Answer 1

if($_SESSION != '')

This is always true. So, your $_SESSION['user'] is an empty string and from home.php you will redirect to login.php. Here $_SESSION['user'] is set, so you will redirect to home.php as well.