edit_handler.php

<?php
include('const.php');
$db_conn = new PDO('mysql:host=localhost;dbname=' . DB_CONNECTION_DB, DB_CONNECTION_USER, DB_CONNECTION_PASS);
//$db_conn->query("UPDATE shedule SET time='$_GET['time']', monday='$_GET['monday']', tuesday='$_GET['tuesday']', wednesday='$_GET['wednesday']', thursday='$_GET['thursday']', friday='$_GET['friday']', saturday='$_GET['saturday']', sunday='$_GET['sunday']' WHERE id='$_GET['id']'");
$db_conn->query('UPDATE shedule SET time="' . $_GET['time'] . '", monday="' . $_GET['monday'] . '    " WHERE id=' . $_GET['id']);
header('Location: /');