UnknownSec Bypass 403

: /var/www/html/ [ drwxr-xr-x ]
name : notice_msg.php <?php require_once "config.php"; $canteen = $_POST['canteenname']; $query = "select * from noticeboardtb where CanteenName= '". $canteen."'"; $result = mysqli_query($conn, $query); while($row = mysqli_fetch_array($result)) { $data["notice"] = $row["Notice"]; } echo json_encode($data); ?>