Update multiple record with single query in database using php

Question

I am making an invoice in PHP where multiple products are inserted at once into one table and there grand total goes to another table. I am trying to UPDATE the invoice in MYSQL and PHP. When I press the submit button, the multiple records data from the form goes to the update.php but the query does not run.

database.php

<?php

$connect = mysqli_connect('localhost','root','','invoice');
if (!$connect){
    die("Connection failed: " . mysqli_connect_error());
}
?>

edit_invoice.php

<!DOCTYPE html>
<html>
<head>
    <title></title>
<style>
    table,tr,td,th { border: 1px black solid;}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>

<body>
<a href="list_invoice.php">Back to Invoice List</a><br><br>
<?php
include('database.php');

$invoice_number = $_GET['invoice_number'];

$sql = "SELECT * from invoice where invoice_number = '$invoice_number' ";
$query = mysqli_query($connect, $sql);

if ($query->num_rows > 0) {
    // output data of each row
$fetch = $query->fetch_assoc();
}
?>

<form method="POST" action="update_invoice.php">
<table>
  <thead>
    <th>Product</th>
    <th>Price</th>
    <th>Quantity</th>
    <th>Width</th>
    <th>Height</th>
    <th>Total</th>
    <th>Action</th>
  </thead>
<?php

$sql2 = "SELECT * from invoice_order where invoice_number = '$invoice_number' ";
$query2 = mysqli_query($connect, $sql2);

if ($query2->num_rows > 0) {
    // output data of each row

$srno = 1;
$count = $query2->num_rows;
for ($i=0; $i < $count; $i++) { 
    while($row = $query2->fetch_assoc()) {
      ?>
  <tbody id="product_table">
    <tr>
        <td><input type="text" name="product[]" value="<?php echo $row["product"]; ?>"></td>
        <td><input type="text" name="price[]" value="<?php echo $row["price"]; ?>"></td>
        <td><input type="text" name="quantity[]" value="<?php echo $row["quantity"]; ?>"></td>
        <td><input type="text" name="width[]" value="<?php echo $row["width"]; ?>"></td>
        <td><input type="text" name="height[]" value="<?php echo $row["height"]; ?>"></td>
        <td><input type="text" name="total[]" value="<?php echo $row["total"]; ?>" class="totalPrice" readonly></td>
        <td><input type="button" value="X" onclick="deleteRow(this)"/></td>
    </tr>
  </tbody>
<?php
    }
}
} else {
    echo "No Record Found";
}
?>

<input type="button" name="submit" value="Add Row" onclick="add_fields();">

<span>Invoice Date:<input type="date" value="<?php echo $fetch["invoice_date"]; ?>" name="invoice_date"></span>
<span>Invoice #:<input type="text" name="invoice_number" value="<?php echo $fetch["invoice_number"]; ?>" readonly></span>

<span>Select Customer:
  <select name="to_user" class="form-control">
    <option><?php echo $fetch["customer_id"]; ?></option>
    <?php
    include('database.php');
      $sql = mysqli_query($connect, "SELECT * From customer");
      $row = mysqli_num_rows($sql);
      while ($row = mysqli_fetch_array($sql)){
      echo "<option value='". $row['customer_id'] ."'>" .$row['customer_id'] ." - " .$row['customer_name'] ."</option>" ;
      }
    ?>
  </select>
</span>

</table>
<span>Grand Total<input type="text" name="grandtotal" id="grandtotal" value="<?php echo $fetch["grandtotal"]; ?>" readonly></span><br><br>
<span>Paid Amount<input type="text" name="paid" id="paid" value="<?php echo $fetch["paid"]; ?>"></span><br><br>
<span>Balance<input type="text" name="balance" id="balance" value="<?php echo $fetch["balance"]; ?>" readonly></span><br><br>
<input type="submit" name="send" value="Submit">
</form>
</body>

<script>
const table = document.getElementById('product_table');
table.addEventListener('input', ({ target }) => {
  const tr = target.closest('tr');
  const [product, price, quantity, width, height, total] = tr.querySelectorAll('input');

  var size = width.value * height.value;
  var rate = price.value * quantity.value;

  if (size != "") {
    total.value = size * rate;
  }else{
    total.value = rate; 
  }
  totalPrice();
});

function add_fields() {
  var row = document.createElement("tr");
  row.innerHTML =
    '<td><input type="text" name="product[]"></td>' +
    '<td><input type="text" name="price[]"></td>' +
    '<td><input type="text" name="quantity[]"></td>' +
    '<td><input type="text" name="width[]" value="0"></td>' +
    '<td><input type="text" name="height[]" value="0"></td>' +
    '<td><input type="text" name="total[]"  class="totalPrice" readonly></td>' +
    '<td><input type="button" value="X" onclick="deleteRow(this)"/></td>';

  table.appendChild(row);
}

function deleteRow(btn) {
  var row = btn.parentNode.parentNode;
  row.parentNode.removeChild(row);
  totalPrice();
}

function totalPrice() {
  var grandtotal = 0;
  var paid = 0;
  $(".totalPrice").each(function() {
    grandtotal += parseFloat($(this).val());
    paid = grandtotal;
  });
  $("#grandtotal").val(grandtotal);
  $("#paid").val(paid);
}
$(document).ready(function() {
  $('#paid').on('input', function() {
    grandtotal = $("#grandtotal").val();
    paid = $("#paid").val();
    balance = parseFloat(grandtotal) - parseFloat(paid);
    $("#balance").val(balance);
  })
});


</script>
</html>

Update_invoice.php

<?php

    include('database.php');

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

        $product  = $_POST['product'];
        $price    = $_POST['price'];
        $quantity = $_POST['quantity'];
        $width    = $_POST['width'];
        $height   = $_POST['height'];
        $total    = $_POST['total'];

        $customer_id    = $_POST['to_user'];
        $invoice_date   = $_POST['invoice_date'];
        $invoice_number = $_POST['invoice_number'];
        $grandtotal     = $_POST['grandtotal'];
        $paid           = $_POST['paid'];
        $balance        = $_POST['balance'];
        $amount_status  = "";

        if ($grandtotal == $paid) {
            $amount_status = "Paid";
        } elseif ($grandtotal == $balance) {
            $amount_status = "Due";
        } else {
            $amount_status = "Partial";
        }

        // Start of Updating data to invoice_order table
        for ($i = 0; $i < count($_POST['total']); $i++) {
            if ($i <> count($_POST['total'])) {

                $sql = "UPDATE invoice_order SET invoice_number = '$invoice_number' , product = '$_POST['product'][$i]', price = '$_POST['price'][$i]' , quantity = '$_POST['quantity'][$i]', width = '$_POST['width'][$i]' , height = '$_POST['height'][$i]' , total = '$_POST['total'][$i]' WHERE invoice_number='$invoice_number' ";

                $query = mysqli_query($connect, $sql);
                if ($query) {
                    header('location: list_invoice.php');
                } else {
                    echo "Unable to enter records in invoice_order table";
                }
            }
        }
        // End of updating data to invoice_order table

        // Start of updating data to invoice table
        $sql2 = "UPDATE invoice SET customer_id = '$customer_id', grandtotal = '$grandtotal', invoice_number = '$invoice_number', invoice_date = '$invoice_date', paid = '$paid', balance = '$balance', amount_status = '$amount_status' WHERE invoice_number='$invoice_number' ";

        $query2 = mysqli_query($connect, $sql2);
        if ($query2) {
            header('location: list_invoice.php');
        } else {
            echo "Unable to enter record in invoice table";
        }
        // End of updating data to invoice table
    }

?>

Answer 1

The approach you are using is not the preferred way of doing the job. Use mysql prepare statement. This will make the code clean, easy to read and secured. Here is the link you can refer Mysql Prepared Statement in PHP

Update multiple record with single query in database using php

Question

1 answers

solution1
0 2018-11-14 20:37:33

Update multiple record with single query in database using php

Question

1 answers

solution1 0 2018-11-14 20:37:33

solution1
0 2018-11-14 20:37:33