Online PHP editor | output for Ajg9p

<?php session_start(); require "Authenticator.php"; require "config.php"; if(!isset($_SESSION['uid'])){ header("location: login.php"); } else if($_COOKIE["verified"] == md5(1)){ header("location: /xampp/doge/master.php"); } else{ $query = 'SELECT * FROM glogin WHERE uid = "'.$_SESSION["uid"].'"'; $data = mysqli_query($dbc, $query); $data = mysqli_fetch_array($data); if($data['set2'] == 1){ $_SESSION['secret2'] = 0; $_SESSION['auth_secret'] = $data['secret']; } else{ $_SESSION['secret2'] = 1; } $Authenticator = new Authenticator(); if (isset($_SESSION['LAST_ACTIVITY']) && (time() - $_SESSION['LAST_ACTIVITY'] > 10)) { $_SESSION["auth_secret"] = ""; // unset $_SESSION variable for the run-time } $_SESSION['LAST_ACTIVITY'] = time(); // update last activity time stamp if (!isset($_SESSION['auth_secret']) || ($_SESSION["auth_secret"] == "")) { $secret = $Authenticator->generateRandomSecret(); $_SESSION['auth_secret'] = $secret; $_SESSION["LAST_CODE"] = time(); } if($_SESSION['secret2'] == 0){ $qrCodeUrl = ""; } else{ $qrCodeUrl = $Authenticator->getQR('myPHPnotes', $_SESSION['auth_secret']); } if (!isset($_SESSION['failed'])) { $_SESSION['failed'] = false; } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Time-Based Authentication like Google Authenticator</title> <link rel="icon" href="favicon.ico" type="image/x-icon" /> <meta name="description" content="Implement Google like Time-Based Authentication into your existing PHP application. And learn How to Build it? How it Works? and Why is it Necessary these days."/> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous"> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script> <link rel='shortcut icon' href='/favicon.ico' /> <style> body,html { height: 100%; } .bg { /* The image used */ background-image: url("images/bg.jpg"); /* Full height */ height: 100%; /* Center and scale the image nicely */ background-position: center; background-repeat: no-repeat; background-size: cover; } </style> </head> <body class="bg"> <div class="container"> <div class="row"> <div class="col-md-6 offset-md-3" style="background: white; padding: 20px; box-shadow: 10px 10px 5px #888888; margin-top: 100px;"> <h1>Time-Based Authentication</h1> <p style="font-style: italic;">A Google Authenticator kinda Authentication</p> <hr> <form action="check.php" method="post"> <div style="text-align: center;"> <?php if ($_SESSION['failed']): ?> <div class="alert alert-danger" role="alert"> <strong>Oh snap!</strong> Invalid Code. </div> <?php $_SESSION['failed'] = false; ?> <?php endif ?> <img style="text-align: center;;" class="img-fluid" src="<?php echo $qrCodeUrl ?>" alt="Verify this Google Authenticator"><br><br> <input type="text" class="form-control" name="code" placeholder="******" style="font-size: xx-large;width: 200px;border-radius: 0px;text-align: center;display: inline;color: #0275d8;"><br> <br> <button type="submit" class="btn btn-md btn-primary" style="width: 200px;border-radius: 0px;">Verify</button> </div> </form> </div> </div> </div> </body> </html> <?php } ?>