tnx for everyone, i found this LINK
and that’s excatly what i was looking for.

    function getTotal(){
    var total = 0;
    $('.sum').each(function(){
        total += parseFloat(this.innerHTML)
    });
    $('#total').text(total);
}

getTotal();

$('.qty').keyup(function(){
    var parent = $(this).parents('tr');
    var price = $('.price', parent);
    var sum = $('.sum', parent);
    var value = parseInt(this.value) * parseFloat(price.get(0).innerHTML||0);
    sum.text(value);
    getTotal();
})

add $sum = 0; variable before while and put $sum += $row['price']; inside your while you can access $sum in Total Price <td>.
maybe you need int cast for $row['price'].

<table>
<tr>
    <td>Name</td>
    <td>Price</td>
    <td>Qty</td>
</tr>
<form action="sendorder.php?supid=<?php echo $supid; ?>" method="post">  
<?php
$sum = 0;
while($row = mysqli_fetch_array($result)) {
    $prodname = $row['name'];
    $supid = $row['supplier'];
    $prodid = $row['id'];
    $prodprice = $row['price'];
    $sum += $row['price'];
?>
<tr>
    <td>
        <input type="checkbox" name="prod[]" id="prod[<?php echo $prodid; ?>]" value="<?php echo $prodid; ?>">
            <label for="prod[<?php echo $prodid; ?>]"><?php echo $prodname; ?></label>
    </td>
    <td>
        <?php echo number_format($prodprice, 2); ?><label for="prod[<?php echo $prodid; ?>]"> NIS</label>
    </td>
    <td>
        <label for="prod[<?php echo $prodid; ?>]"><input style="font-size: 12px;" type="text" name="qty_<?php echo $prodid; ?>" placeholder="Qty" minlength="1" maxlength="3" size="2"></label>
    </td>
</tr>
<tr>
    <td><b>Total Price:</b></td>
    <td rowspan="1" colspan="2"><?php echo $sum; ?></td> \ HERE I WANT TO MAKE THE LIVE CALCLUTION
</tr>
<?php
}
?>
<tr>
    <td rowspan="1" colspan="3">
        <input type="submit" name="submit" value="Submit">
    </td>
</tr>
</form>

I have a table of products (data pulled from SQL database) with this fields: ID, Name, Price.

After i pulled the data i have a QTY cell for each product…

I want to make a cell at the bottom to sum all the qty*prodcut price to get total price of the order…

That’s my table:

<table>
<tr>
    <td>Name</td>
    <td>Price</td>
    <td>Qty</td>
</tr>
<form action="sendorder.php?supid=<?php echo $supid; ?>" method="post">  
<?php
while($row = mysqli_fetch_array($result)) {
    $prodname = $row['name'];
    $supid = $row['supplier'];
    $prodid = $row['id'];
    $prodprice = $row['price'];
?>
<tr>
    <td>
        <input type="checkbox" name="prod[]" id="prod[<?php echo $prodid; ?>]" value="<?php echo $prodid; ?>">
            <label for="prod[<?php echo $prodid; ?>]"><?php echo $prodname; ?></label>
    </td>
    <td>
        <?php echo number_format($prodprice, 2); ?><label for="prod[<?php echo $prodid; ?>]"> NIS</label>
    </td>
    <td>
        <label for="prod[<?php echo $prodid; ?>]"><input style="font-size: 12px;" type="text" name="qty_<?php echo $prodid; ?>" placeholder="Qty" minlength="1" maxlength="3" size="2"></label>
    </td>
</tr>
<?php
}
?>
<tr>
    <td><b>Total Price:</b></td>
    <td rowspan="1" colspan="2">XXX NIS</td> \ HERE I WANT TO MAKE THE LIVE CALCLUTION
</tr>
<tr>
    <td rowspan="1" colspan="3">
        <input type="submit" name="submit" value="Submit">
    </td>
</tr>
</form>