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Please, help. I'm new to php but I've tried so many times to make it work. I've wrote a script that reads user and password data correctly, to log into a reserved webpage. The problem is that when you press the login button, it doesn't redirect to the target.php (reserved) page. The form is in a file called login.php. It reads and connect to the db, but stays on this login page. As a matter of fact, if I manually type in the url mywebsite/target.php after putting the credentials, it works. But I need an automatic redirect from login.php page and if credentials are correct, redirect to target.php. <?php session_start(); function loginform(){ echo "<form action='' method='POST'> Username: <input type = 'text' name='username'> Password: <input type = 'text' name='password'> <input type = 'submit' name='login' value='Login'> </form> "; } function logoutform(){ echo "<form action='' method='POST'> <input type = 'submit' name='logout' value='Logout'> </form> "; } function login($username, $password){ $pass = md5($password); $con= mysqli(whateverwebsite.com, 'Nameofthetable', 'hashedmd5password') or die (mysql_error()); mysql_select_db('whateverdb', $con) or die (mysql_error()); $result = mysql_query(" SELECT * FROM user WHERE username='$username' AND password='$pass' ") or die (mysql_error); $count= mysql_num_rows($result); if($count==1) { $_SESSION['login']=$username; header('Location:Aggiornamenti/Aggiornamenti.php'); /*this doesn't actually work*/ } else { header('Location:index.php'); /*this doesn't actually work*/ echo "Wrong login"; } } function logout(){ session_destroy(); } if (isset($_SESSION['login'])) { /*this function seems to be ignored*/ echo "Success"; logoutform(); } else{ echo "Log in with username and password."; loginform(); } if ($_POST['login']) { login($_POST['username'], $_POST['password']); } elseif($_POST['logout']){ echo "you are logging out"; logout(); } ?> also, Before the html of the target.php page, there is this <?php session_start(); echo "Reserved area<br>"; if (!isset($_SESSION['login'])) { exit("you must login <a href='../login.php'>Login<a>"); } else { echo "Do the <a href='../login.php'>Logout</a>"; } ?>