$mm=md5(md5($_POST['mm'],true));$sql="select * from `user` where `user`='$dl'";$fan=mysql_query($sql);$a=mysql_fetch_array($fan);if($a)?{ echo $mm; echo "<br />"; echo $a['password']; if($mm==$a['password']) ? ?{ $_SESSION['name']=$a['user']; ? $_SESSION['id']=$a['id']; ? echo"登錄成功<br/><br/><br/><a href='index.php'>歡迎進入</a>"; header('index.php'); ? ?} else ? ?{ ? echo"登錄失敗</br>"; ? echo"<a href='zhuce.php'>點擊注冊</a>"; } }? ? else{ ? ? ? echo"請輸入完整的信息<a href='denglu.php'>返回登錄</a>"; ? ?}