<?php 
session_start();
require_once'../include/dbcon.php' ;
$a = $_POST['test'];
$b = $_POST['test1'] ;
$d = $_POST['test2'] ;
//$e = $_POST['test2'] ;
$c = $_POST['wid'] ;

$ex =$DBcon->prepare("update average set grades = '$a',start = $b, end = $d  where sn = $c " );

if($ex->execute()) header("location: cusgrade.php") ;

?>