Re: Filtering (was storing single and double quote in MySQL)

On 5/25/06, afan@afan.net <afan@afan.net> wrote:

As you said: Filtering. My next queston. I have small form to activate/deactivate member's account. <form method=post action=members.php> <input type=hidden name=username value=<?= $Usename ?> <input type=hidden name=status value=<?= $Status ?> <input type=image name=action value=change src=images/status_live..gif border=0> </form> and once adminisrtrator clicks on button: if(isset($_POST['action'])) { $Username = $_POST['Username']; $action = ''; switch($action) {

    case 'change':
      mysql_query("UPDATE members SET status='live' WHERE Username =

'".$Username."'");

    break;

    case 'edit':
      //  ...

break; } } Do I have to filter $Username with mysql_real_escape_string() function even if $Username will not be stored in DB and I use it in WHERE part? If no - how to filter it? Thanks -afan Yes, you're sending it into the DB which means it is a command that

needs to be escaped. All MySQL commands need to be escaped.