PHP Sessions shopping cart: update product if it's already id the session

Question

I have struggled to find a solution to a simple shopping cart with $_SESSION. I kept it very simple and this is my code right now

if ( Input::isPos         


        

Answer 1

Try using the size as a key to an extra dimension in your multidimensional array. Your current code only allows you to have one size per item.

You would end up with something like:

if ( Input::isPost('add') ) {

    $id = Input::get('id');
    $qta = Input::post('qta');
    $size = Input::post('size');

    if ( !isset($_SESSION['cart']) ) {
        $_SESSION['cart'] = array();
    }

    if ( array_key_exists($_SESSION['cart'][$id][$size]) ) {
        $_SESSION['cart'][$id][$size] += $qta;
    } else {
        $_SESSION['cart'][$id][$size] = $qta;
    }
}