PHP Fatal error: Uncaught Error: Unsupported operand types error Programming Web Development by ianhaneybs … for office staff and delivery drivers so the office staff book the orders in and the delivery drivers are able to… Re: PHP Fatal error: Uncaught Error: Unsupported operand types error Programming Web Development by Dani The code `$_SESSION["cart_item"][$k]["quantity"] += $_POST["quantity"];` means that, whatever the value within `$_POST['quantity']`, you want to add that value to `$_SESSION["cart_item"][$k]["quantity"]`. The error of unsupported operand types means that you're trying to add values that can't be … microsoft & gmail continually forcing password change, what is workaround? Programming Software Development by momentum2024 … can i stop this please. [working on a HP Z Book Win 10] *sorry if this is a repeat question somewhere… Re: microsoft & gmail continually forcing password change, what is workaround? 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I recommend it to all. avi wilensky Re: book collection Java code Programming Software Development by jbennet i have some similar code for a cd collection. make 1 class for the collection, and another for the disk (in your cae a book) your code looks good so far, just try and get all the basic repetitive parts done first. constructors, mutators, acessors and then work on the more advanced methods Re: book collection Java code Programming Software Development by Alex Edwards An idea? Use JDBC to store book information then retrieve it later. Files are ok, but it might be easier to query necessary information than try to make a dozen different methods for obtaining books in certain order, or certain books period. Book Inventory does not compile please help. im uisng header files help!!! asap!! 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