OverLord Shell

<?php
/*
@Purpose: add company location into database
@Author: Rajashree
@CreatedOn: 5 May 2016
@ModifiedOn: 5 May 2016
*/
error_reporting(0);
session_start();

if(!isset($_SESSION['company_id']) || !isset($_SESSION['company_name'])){session_destroy();echo "login.php";exit;}
if(!in_array($_SESSION['loggedin_user'],array('admin','company'))){echo "404.php";exit;}
if($_SERVER['REQUEST_METHOD']!='POST' || empty($_POST)){echo "404.php";exit;}
require_once("db/conn.php");
$business=$_POST['business'];
//$id=$_POST['id'];
//var_dump($_POST);exit;
//echo "UPDATE busdir_mst_referal SET business='$business',close='$action',modifiedby='".$_SESSION['company_id']."' WHERE ref_id=".$id;exit;
$action=$_POST['action'];
$id=$_GET['id'];

echo "UPDATE busdir_mst_referal SET business='$business',close='1',modifiedby='".$_SESSION['company_id']."' WHERE ref_id=".$id;exit;
$r=$connection->query("UPDATE busdir_mst_referal SET business='$business',close='1',modifiedby='".$_SESSION['company_id']."' WHERE ref_id=".$id);
$connection->close();
//echo $r;exit;
if($r)echo "success";
else echo "An Unknown error occured. Please try again.";
?>