Notice: Undefined index php error

Question

Error i am recieving:
Notice: Undefined index: remove in C:\xampp\htdocs\shopp\shopping-cart.php on line 7
Important part of my code:
session_start();
//remove products from cart
if(!isset($_GET['remove']))
foreach($_SESSION['cart'] as $key => $val)
{
if($val==$_GET['remove']) //this is line 7
{
unset($_SESSION['cart'][$key]);
}
}
elseif(isset($_GET['remove_all'])){
unset($_SESSION['cart']);
}

Answer 1

Okay, let's review this first...
session_start();
// You need to wrap the foreach block in { }
// because it contains more than one line
// of instructions
if(!isset($_GET['remove']))
{
foreach($_SESSION['cart'] as $key => $val)
{
// here you are comparing $val against
// a non-existent value ($_GET['remove'])
// the if(!isset($_GET['remove'])) above
// had verified that. There is no value
// in $_GET having key 'remove'. You can
// change it to if(isset($_GET['remove']))
// to be sure we have a valid value to be
// compared with $val here.
if($val==$_GET['remove']) //this is line 7
{
unset($_SESSION['cart'][$key]);
}
}
}
elseif(isset($_GET['remove_all'])){
unset($_SESSION['cart']);
}
Hth, cmiiw

Answer 2

Thank you

Answer 3

You're welcome : )