UnknownSec Bypass 403

: /var/www/zenithentcare/stmedicosoftware/ [ drwxrwxr-x ]
name : get_opdno.php <?php require_once "config.php"; session_start(); $query="Select concat('OPD','/',DATE_FORMAT(Now(), '%Y%m%d%h%i%s'),'/', Convert(UserDetailsID,char(10)), '/', FLOOR(RAND() * 10000)) as fileno from userdetailstb where userdetailsid='".$_SESSION['userid']."'"; $result = mysqli_query($conn, $query); while ($row=mysqli_fetch_array($result)) { $data["fileno"] = $row["fileno"]; } echo json_encode($data); ?>