删除MYSQL数据库

?php
$link=mysql_connect("localhost","root","123");
mysql_select_db("ylzou",$link);
$q = "SELECT * FROM pc";
mysql_query("SET NAMES GB2312");
$rs = mysql_query($q,$link);
#if(!$rs){die("Valid result!");}
echo "";
echo "
    ename
    PCname
    ";
while($row = mysql_fetch_row($rs))
    echo "
    del
    $row[0]
     ";
echo "";
mysql_free_result($rs);
?>

?php
$link =mysql_connect("localhost","root","123");
mysql_select_db("ylzou", $link);
$del_id=$_GET["ename"];
$exec="delete from pc where ename='$del_id'";
mysql_query($exec, $link);
echo "ok!";
mysql_close($link);
?>