[PHP] DB update

$no = $_POST[no];

$id = $_POST[id];

// $subject = addslashes($subject);

$subject = addslashes(iconv("UTF-8","euc-kr",$subject)); 

// $memo = addslashes($memo);

$memo = addslashes(iconv("UTF-8","euc-kr",$memo)); 

$reg_date = time();

$sql = "update 테이블명 set subject = '$subject', memo = '$memo', reg_date = '$reg_date'  where no = $no" ;

mysql_query($sql) or die (mysql_error());