批改密码PHP

<?php<br /> session_start();<br /> header("Content-type:text/html; charset=utf-8");<br /> include '../config.php';<br /> if($_SESSION['admin']=='') header('location:index.php');<br /> $show = "display:none;";<br /> 		$sql = "SELECT * FROM `cp_admin` WHERE `id`='1'";<br /> 		$ret = mysql_query($sql);<br /> 		$row = mysql_fetch_assoc($ret);<br /> <br /> if($_POST){<br /> 	$admin = $_POST['admin'];<br /> 	$pass = $_POST['pass'];<br /> 	$pass1 = $_POST['pass1'];<br /> 	$pass2 = $_POST['pass2'];<br /><br /> 	if($row['name']!=$admin && $row['pwd']!=md5($pass) && $pass1!=$pass2){<br /> 		 	echo "<script>alert('修改失败，原因：原始密码不正确，或者两次输入的密码不相同！')</script>";<br />   	 		}else{<br />   	 		$pass1=md5($pass1);<br /> 	$sql1 = "UPDATE `cp_admin` SET `name`='{$admin}',`pwd`='$pwd2).', WHERE `id`='1'";<br />   		mysql_query($sql1);<br />   		echo "<script>alert('修改成功！')</script>";<br />   		<br /> 		echo "<script language=\"javascript\">location.href='exit.php';</script>";<br />   		$show = "display:block;";<br />  <br /> 	}<br /> }<br /> ?>