Can't get foreach working

[Phaelon]

Basically, $_POST['cartquantity'] equals 3, so I want it to add the value of $row['weight'] three times to $_SESSION['cart']['weight']. I tried to do it with foreach, but it doesn't work. What have I done wrong?

 

foreach ($_POST['cartquantity']) {
            $_SESSION['cart']['weight'] += $row['weight'];
        }

[TrickyInt]

Couldn't you do something like:

	<?php
	while($_POST['cartquantity'] > 0) {
		$_POST['cartquantity']--;
		$_SESSION['cart']['weight'] += $row['weight'];
	}
	?>

[Jacques1]

Are you guys joking?

 

In mathematics, we have this thing called multiplication. PHP can do it, too:

$_SESSION['cart']['weight'] += $_POST['cartquantity'] * $row['weight'];

But it's not a good idea to add the total weight in the session, anyway. What if the user reduces the quantity? Then you have a lot of trouble getting the exact weight difference and reducing that number again.

 

Store the quantity and calculate the totals when needed.

[TrickyInt]

Are you guys joking?

 

In mathematics, we have this thing called multiplication. PHP can do it, too:

$_SESSION['cart']['weight'] += $_POST['cartquantity'] * $row['weight'];

But it's not a good idea to add the total weight in the session, anyway. What if the user reduces the quantity? Then you have a lot of trouble getting the exact weight difference and reducing that number again.

 

Store the quantity and calculate the totals when needed.

 

Ahaha, yeah, your right.

I'm tired.