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POPHP shopping cart display issue
 

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  1. POPHP shopping cart display issue
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    <p>When creating a shopping cart for my website, I have add and remove functions for individual products. When I add a product it adds it to a new row in the table, not the current row.</p> <p>Here is the code for adding and removing products:</p> <pre><code>function addproduct($product_id, $product_qty){ $q = "SELECT p_name FROM Product WHERE product_id = $product_id LIMIT 1"; $result = mysqli_query($_SESSION['conn'],$q); $row = mysqli_fetch_array($result); $product_name = $row['p_name']; //get the product name from product id because it is better to display name than id in the cart if (isset($_SESSION['cart'])){ //if shopping cart is not empty $cart = $_SESSION['cart']; if (array_key_exists($product_name, $cart)){ //if the product exists, update quantity $cart[$product_name] += $product_qty; } else { //otherwise, add new product-quantity pair to the array $cart[$product_name] = $product_qty; } $_SESSION['cart'] = $cart; //write the updated array back to session variable } else { //if shopping cart is empty $cart = array($product_name=&gt;$product_qty); //add product and quantity to the shopping cart $_SESSION['cart'] = $cart; //write the updated array back } mysqli_free_result($result); } function deleteproduct($product_id, $product_qty){ $q = "SELECT p_name FROM Product WHERE product_id = $product_id LIMIT 1"; $result = mysqli_query($_SESSION['conn'],$q); $row = mysqli_fetch_array($result); $product_name = $row['p_name']; if (isset($_SESSION['cart'])){ //if shopping cart is not empty $cart = $_SESSION['cart']; if (array_key_exists($product_name, $cart)){ //if product exists, update quantity $cart[$product_name] -= $product_qty; if ($cart[$product_name] == 0){ //if the qty 0, delete key unset($cart[$product_name]); } } else { //exception echo "&lt;p&gt;Error1&lt;/p&gt;"; } $_SESSION['cart'] = $cart; //write array back to session variable } else { echo "&lt;p&gt;Error2&lt;/p&gt;"; } mysqli_free_result($result); } </code></pre>
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    1. USBradley Hodson
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    1. COWe don't need to see the deleteproduct in that code. Can you give examples of $product_name? Also you're doing a few things twice when, by changing your ifs you can do just once.
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      1. POPHP shopping cart display issue
      1. USPopnoodles
    2. COWhat is your question?
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      1. POPHP shopping cart display issue
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    3. COmy question is how i stop another row being added to the table when I add an addtional quantity of an item?
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      1. USBradley Hodson
 

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