function message($nam, $emai,  $phone, $sub, $mes) {
    $sql = "INSERT INTO messages(sender_name,sender_email,phone,subject,message)VALUES( '$nam', '$emai','$phone', '$sub', '$mes')";
    $query = main_query($sql);
    return $query;
}


if(isset($_POST['send'])){

        $nam = $_POST['name'];
        $emai = $_POST['email'];
        $phone = $_POST['phone'];
        $sub = $_POST['subject'];
        $mes = $_POST['message'];

        if($send = message($nam, $emai, $phone , $sub , $mes) == true){

    if($nam && $emai && $phone && $sub && $mes){

      echo '<script type="text/javascript"> alert("Message Sent Successfuly, you will be contacted Soon")'

      . '</script>';
    }

        }

       }