<?php echo "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />"; echo "<center> <form action=\"hash.php\" method=\"POST\"> <input type=\"text\" name=\"hash\"> <input type=\"submit\" name=\"go\" value=\"Захешировать!\"> <input type=\"hidden\" name=\"verify\" value=\"push\"> </form> </center>"; if(isset($_POST['verify'])) { if(isset($_POST['hash'])) $hash = $_POST['hash']; $result = md5($hash); echo "<center>Ваш хэш:<br />" . $result . "</center>"; die; } else { echo "<center>Введите текст для хэширования</center>"; } ?>