Hi all. I'm not sure whether to post this in security or software forum. So forgive me if I cross posted.

Anyway, my question is:

PHP's register global by default is turn off and this is good for security. Now, if I code my PHP in this way:

<?

$myvar = $_POST["myvar"];

if($myvar)
this is correct, so do what it's supposed to do
else
back to login
?>

Will I be actually back to square one, as if I'm using register global = on? I saw some tutorial uses:

<?
if ($_GET["myvar"])
alert admin
else if($_POST["myvar"])
ok
?>

But with tens of variables in lots of files, it's going to be difficult for me to change and debug. (Of course it can be done, but is it worth it?) Wouldn't it be slowing down the php processing?

No. I think you'll be fine.

When you turn register_globals off, all URL variables go under _GET and won't be available in the global scope. So no matter what, nobody can 'overwrite' your myvar by passing a URL param by the same name.

The tutorials may have used to illustrate the point that you can even 'catch' an offender if you watch out.

HTH

thanks for your confirmation, nxny!