PHP - 如果带有** AND **的条件在foreach循环中不起作用

Question

I want to update array data which comes in foreach loop. I am trying with script given bellow, it is only updating the very last row of data.

And it is giving the error in this line if ($updateInvoiceAddedItems AND $updateInvoiceSubtractedItems) .

PHP script

if (isset($_POST['submit'])) {

foreach($_POST['data'] as $key => $value) {
    $invoiceItemId = intval($value['invoiceItemId']);
    $itemId = intval($value['ItemId']);
    $QTY = intval($value['QTY']);
    $addedQTY = intval($value['addedQTY']);
    $subtractedQty = intval($value['subtractedQty']);
    $Total = is_numeric($value['total']) ? $value['total'] : false;

    try {

        if($addedQTY > 0) {
            $updateInvoiceAddedItems = $db - > prepare("UPDATE `invoiceItems` SET 
            qty = qty + : addedQTY,
            addedQty = addedQty + : addingQTY where id = : Iid ");

            $updateInvoiceAddedItems - > execute(array(':Iid' => $itemId, ':addedQTY' => $addedQTY, ':addingQTY' => $addedQty));

        }
        elseif($subtractedQty > 0) {
            $updateInvoiceSubtractedItems = $db - > prepare("UPDATE `invoiceItems`  SET 
            qty = qty - : subtractedQty,
            subtractedQty = subtractedQty + : subtractingQty where id = : iiId ");

            $updateInvoiceSubtractedItems - > execute(array(':iiId' => $itemId, ':subtractedQty' => $subtractedQty, ':subtractingQty' => $subtractedQty));


        }

        if ($updateInvoiceAddedItems AND $updateInvoiceSubtractedItems) {
            echo ' <script> alert("success") </script>';
            exit;

        } else {
            echo ' <script> alert("Error") </script>';
        }
    } catch (PDOException $e) {
        echo 'Connection failed: '.$e - > getMessage();
    }
  }
}

Answer 1

For the first question follow @Darius Answer And for the 2nd question change input name from name="data['+i+'][name]" to name="data[<?php echo $i; ?>][name]"