PHP本地主机运行错误[关闭]

i want to redirect index.php which if user click on logout button it redirects to login.php page but it don't. http://localhost:/dropedit/GAMEBOX and if some one type like following it went all wrong like,whole page becomes garbled http://localhost:/dropedit/GAMEBOX/index.php logout button code is Logout ?

i tried but din't find some thing!

Make the login button a part of a form, and have the form submit to index.php. The form will contain an empty input that tells the page that you have been logged out. For example:

<form action = '/' method = 'post'>
  <input style = 'display: none;' name = 'logout' value = 'logoutTrue">
  <input type = 'submit' value = 'Logout'>
</form>

Next, a simple if statement to check if you have been logged out:

<?php 
if (isset($_POST['logout'])) {
  $logoutVal = $_POST['logout'];
  if ($logoutVal === "logoutTrue") {
    header("Location: http://localhost/login.php");
  }
}
?>

Uh, this should work, I think? If it doesn't please post the error codes.