Shopping Cart with Sessions

markster · 02-03-2007, 02:32 PM

I am trying to create a shopping cart with sessions. I want the final session to end up as something like 'number,number,numer' with the numbers being various product ids. I have the following codes on the pages but the view-cart.php page shows nothing.

product.php

PHP Code:

  echo("<form action=\"add-cart.php\" method=\"post\">\n");

echo("<input type=\"hidden\" name=\"id\" value=\"".$id."\">\n");

echo("<input type=\"submit\" value=\"Add to Cart\">\n");

echo("</form>\n");

add-cart.php

PHP Code:

  $prodid = $_POST['id'];

$cart = $_SESSION['cart'];

if ($cart) {

    $_SESSION['cart'] .= ",".$prodid;

} else {

    session_register('cart');

    $_SESSION['cart'] == $prodid;

}

view-cart.php

PHP Code:

  echo($_SESSION['cart']);

session_start(); is included as default at the very top of all pages.

The problem is the code on view-cart.php echoes nothing

please help!

redhead · 02-03-2007, 03:38 PM

Code:

...
} else {
    session_register('cart');
    $_SESSION['cart'] == $prodid;
}

Shouldn't this be

Code:

...
} else {
    session_register('cart');
    $_SESSION['cart'] = $prodid;
}

DJMaze · 02-03-2007, 03:59 PM

I see someone mis-interpreted session_register().
Please read http://php.net/session_register

Quote:

Register one or more global variables with the current session

So, where is $cart?