跳转问题

<?phprequire('shujulianjie.php'); //接入数据库文件date_default_timezone_set('Asia/Shanghai'); //此句用于消除时间差$iipp     = $_SERVER["REMOTE_ADDR"]; //获取ip$times    = date("Y-m-d H:i:s"); //取得?前??//验证key有效性和找出注册信息   $key=$_GET["key"];     $key=addslashes(trim($key));	echo $key;	date_default_timezone_set('Asia/Shanghai');//此句用于消除时间差	$time=time();//当前时间戳	$time=$time-86400;//获取一天之前的时间戳	//找出是否存在或失效	$str10="select  mail from zhuceyanzheng where yanzhengzi='$key' and zhuangtai='0'  and shijiancuo>'$time' " ;     $result10=mysql_query($str10, $con);  //送出查?	$row10=mysql_num_rows($result10);	echo $row10;	if(!$row10)	{//未找到跳转到失败页面    echo'<script language="javascript" type="text/javascript">';     echo 'window.location.href="zhucejieguo.php?zt=0"; ';   echo ' </script>';	exit;	} else {	  //有则写入注册信息   echo'<script language="javascript" type="text/javascript">';     echo 'window.location.href="zhucejieguo.php?zt=1"; ';   echo ' </script>';}mysql_close($con);?>

    if(!$row10)    {//未找到跳转到失败页面    echo'<script language="javascript" type="text/javascript">';     echo 'window.location.href="zhucejieguo.php?zt=0"; ';   echo ' </script>';     exit;     } else {      //($row10=0,下面的语句会执行）     $str3       = "update zhuceyanzheng  set zhuangtai='1' where mail='$youxiang' "; 	 $result3=mysql_query($str3,$con);   }