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Hello,

 

I get the following error after clicking on the add to cart link in ch5:

 

Fatal error: Unsupported operand types in C:\Program Files (x86)\EasyPHP-5.3.8.1\www\\Ch05\cart.php on line 127

 

The line is:

$subtotal = $_SESSION['cart'][$row['sw_id']] * $price;

What is the problem?

 

Thanks

 

 

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use var_dump on the variables to ensure both are of type integer. You may need to typecast one or both of them.

int($_SESSION['cart'][$row['sw_id']])
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