我需要用不同的值更新多行数据。 我可以用来实现相同的php循环或代码？

Question

I need to update multiple rows of data with different values. which php loop or code i can use to implement the same?

here is the code which am using.

for ( $i = 0 ; $i < count ( $_POST ['productname'] ) ; $i++ )  
{  
    $qry2 = "UPDATE invoice_transaction 
                SET inv_trans_item_qty='".$_POST['quantity'][$i].
                "',inv_trans_created_by='".$act_admin.
                "',inv_trans_created_on='".$date.
                "' WHERE inv_code='".$inv_code."'";

    $res2 = mysqli_query($cn,$qry2);
}

Answer 1

You can use form elements with names like item[1][productname] :

<input type="text" name="item[1][productname]" />
<input type="text" name="item[1][quantity]" />
<br/>
<input type="text" name="item[2][productname]" />
<input type="text" name="item[2][quantity]" />

Then on the server side you can loop over those arrays:

foreach ($_POST["item"] as $item)
{
    $productname = $item['productname'];
    $quantity = $item['quantity'];

    // do stuff with $productname and $quantity
}