Empty quantity error

[wixil]

I implemented this code

<?php
 session_start();
require_once("config.php");

//code for Cart
if(!empty($_GET["action"])) {
switch($_GET["action"]) {
    //code for adding product in cart
    case "add":
        if(!empty($_POST["quantity"])) {
            $pid=$_GET["pid"];
            $result=mysqli_query($con,"SELECT * FROM tblproduct WHERE id='$pid'");
              while($productByCode=mysqli_fetch_array($result)){
                    $itemArray = array($productByCode["code"]=>array('name'=>$productByCode["name"], 'code'=>$productByCode["code"], 'quantity'=>$_POST["quantity"], 'price'=>$productByCode["price"], 'image'=>$productByCode["image"]));
            if(!empty($_SESSION["cart_item"])) {
                if(in_array($productByCode["code"],array_keys($_SESSION["cart_item"]))) {
                    foreach($_SESSION["cart_item"] as $k => $v) {
                            if($productByCode["code"] == $k) {
                                if(empty($_SESSION["cart_item"][$k]["quantity"])) {
                                    $_SESSION["cart_item"][$k]["quantity"] = 0;
                                }
                                $_SESSION["cart_item"][$k]["quantity"] += $_POST["quantity"];
                            }
                    }
                } else {
                    $_SESSION["cart_item"] = array_merge($_SESSION["cart_item"],$itemArray);
                }
            }  else {
                $_SESSION["cart_item"] = $itemArray;
            }
        }
    }
    break;

    // code for removing product from cart
    case "remove":
        if(!empty($_SESSION["cart_item"])) {
            foreach($_SESSION["cart_item"] as $k => $v) {
                    if($_GET["code"] == $k)
                        unset($_SESSION["cart_item"][$k]);
                    if(empty($_SESSION["cart_item"]))
                        unset($_SESSION["cart_item"]);
            }
        }
    break;
    // code for if cart is empty
    case "empty":
        unset($_SESSION["cart_item"]);
    break;
}
}

// Send the user to the place order page if they click the Place Order button, also the cart should not be empty
if (isset($_POST['placeorder'])) {
    header("Location: "."placeorder.php");
    exit;
}



?>

cart display code
<?php
if(isset($_SESSION["cart_item"])){
$total_quantity = 0;
$total_price = 0;
?>
<table class="tbl-cart" cellpadding="10" cellspacing="1">
<tbody>
<tr>
<th style="text-align:left;background-color:#3092C0,color:white;padding-top:12px;padding-bottom:12px;font-family:Saira Condensed;font-size:20;">PRODUCT</th>
<th style="text-align:left;background-color:#3092C0,color:white;padding-top:12px;padding-bottom:12px;font-family:Saira Condensed;font-size:20;" width="5%">QUANTITY</th>
<th style="text-align:center;background-color:#3092C0,color:white;padding-top:12px;padding-bottom:12px;font-family:Saira Condensed;font-size:20;" width="5%">REMOVE</th>
</tr>
<?php
foreach ($_SESSION["cart_item"] as $item){
$item_price = $item["quantity"]*$item["price"];
?>
<tr>
<td style="text-align:left;background-color:transparent,color:#303030;padding-top:12px;padding-bottom:12px;font-family:Saira Condensed;font-size:16;"><img src="<?php echo $item["image"]; ?>" class="cart-item-image" /><?php echo $item["name"]; ?></td>
<td style="text-align:left;background-color:transparent,color:#303030;padding-top:12px;padding-bottom:12px;font-family:Saira Condensed;font-size:16;"><?php echo $item["quantity"]; ?></td>
<td style="text-align:center;background-color:transparent,color:#303030;padding-top:12px;padding-bottom:12px;font-family:Saira Condensed;font-size:16;"><a href="preset_template.php?action=remove&code=<?php echo $item["code"]; ?>" class="btnRemoveAction"><img src="icon-delete.png" alt="Remove Item" /></a></td>
</tr>
<?php
$total_quantity += $item["quantity"];
$total_price += ($item["price"]*$item["quantity"]);
}
?>
<tr>
<td></td>
</tr>
</tbody>
</table>
<?php
} else {
?>
<div class="no-records">Your Shopping Cart is Empty</div>
<?php
}
?>

Am using $total_quantity += $item["quantity"]; to get total quantity. and $total_price += ($item["price"]*$item["quantity"]);

But am getting this error "Warning: Undefined variable $total_price in C:\xampp\htdocs\mart\preset_template\cart.php on line ...." when the  total price is zero and getting Warning: Undefined variable $total_quantity in C:\xampp\htdocs\mart\preset_template\cart.php when total quantity is zero but works perfectly when not empty. i want the total quantity and price to display 0 when empty instead of that error

[requinix]

I'm not sure how you're getting that error. Are you sure the code you posted is exactly what you are running that creates the warnings? Because you very clearly do set those two variables with values ahead of time - they are not undefined.

[wixil]

yea its the code that is producing the warning

NOTE This warning clears as soon as a add an item in the cart

[requinix]

And what lines are PHP saying that have $total_price and $total_quantity undefined? Make sure to read the message carefully for exactly which lines it says that happens on.

[wixil]

The lines are

<div style="font-size:28px; color:#3092C0; font-family:Saira Condensed;"><?php echo $total_price; ?></div></div> and

<div style="font-size:20px; color:white; font-family:Saira Condensed; margin-left:6px;"><?php echo $total_quantity; ?></div></div>

[Barand]

It seems to be either a problem with your error reporting or you have a problem between your chair and keyboard.

Not only is it inventing errors that aren't errors, it's saying they are in lines of code that don't exist.

[requinix]

1 hour ago, wixil said:

The lines are

<div style="font-size:28px; color:#3092C0; font-family:Saira Condensed;"><?php echo $total_price; ?></div></div> and

<div style="font-size:20px; color:white; font-family:Saira Condensed; margin-left:6px;"><?php echo $total_quantity; ?></div></div>

I don't see those lines included in your first post. Please post the full thing.