PHP Question.. clearing variables...
 

say for example you're submitting a form to the page it is on (php_self).. and say you hit the refresh button after submitting that form... all those variables are re-submitted which causes for duplication... how do you avoid that so that you can clear those variables out?

i thought unset($variable) would work, but it doesn't.

the code looks like:

if (isset($comment)) {
$date = time();
$sqlquery6 = "INSERT INTO bgcomments
VALUES ('id','$_SESSION[username]','$uid','$comment','$date')";
$resultse = mysql_query($sqlquery6);

unset($comment);
}

if (isset($_POST['comment']))
{
$date = time();
$r = mysql_query("INSERT INTO bgcomments VALUES ('id','$_SESSION[username]','$uid','$comment','$date')");
unset($comment);
}

I don't quite understand what you're doing. What I would do, however, is work on the syntax a bit more.

maybe even add
if($_SERVER['REQUEST_METHOD'] hahahaha post) {
// code inside
}
that tells the script to only parse if the type is POST, meaning from a form of some sort :) hope that helps

CHEERS