How to calculate (+) value from $_POST before save to database - php

Question

This my code
$_SESSION['poraw'] = substr(md5(time()), 0, 16);
$userid= $_SESSION["userid"];
$today = date('Y-m-d');
$month = $_POST['month'];
for($i = 0; $i < count($_POST['id']); $i++){
$id = $_POST['id'][$i];
$resin = $_POST['resin'][$i];
$hasil = $_POST['hasil'][$i];
$sql="INSERT INTO po_supplier_temp (unique_code,po_customer_month,resin,qty,username)
VALUES ('".$_SESSION['poraw']."','$month','$resin','$hasil','$userid')";
$sql = $conn->query($sql);
}
Current results:
if $resin same , i want $hasil plus it (+) , before save to dabatase and only one name $resin to database in same time
Like this:
thanks

Answer 1

You have two options: Create a stored procedure to handle the custom logic, or integrate the logic inside your php.
I'll only show you how you can make a stored procedure to do the task you wish to complete. If you need help on how to use a stored procedure, this has already been answered somewhere around here.
--- Transact-SQL Syntax
CREATE PROCEDURE [dbo].[InsertOrUpdateMyThing]
(
#SessionId int,
#Month date,
#Resin int,
#Hasil int,
#UserId int
)
AS
BEGIN
SET NOCOUNT ON
IF EXISTS(SELECT 1 FROM po_supplier_temp WHERE resin = #Resin)
BEGIN
UPDATE p
SET p.resin = p.resin + 1
FROM po_supplier_temp p
WHERE p.resin = #Resin
END
ELSE
BEGIN
INSERT INTO po_supplier_temp (unique_code, po_customer_month, resin,qty, username)
VALUES (#SessionId, #Month, #Resin, #Hasil, #UserId)
END
END
EDIT: If you're passing multiple values at the same time, you'll need to edit this to accept a table-valued parameter with all the necessary information, as well as modify the code inside the procedure to handle a set of data. It'd be better to do that, rather than invoke this procedure X amount of times.