ob_start();session_start();$_SESSION['name'] = $_POST['text'];<html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title></head><body><form id="form" class="form" method="post" action="post.php"><label for="text">user name</label><input type="text" id="name" ><br /><label for="password">password</label><input type="text" id="password" ><br /><input type="submit" id="submit" class="submit" value="confirm"></form></body></html>