reply.php

<?php
session_start();
require_once('class.php');
$user = new User();
if (!$user->isLoggedIn()) {
    header("Location:login_html.php");
}
echo "Welcome ".$_SESSION['user']."<br>";
echo "<a href='redirect.php'>Logout</a> <br>";
if(isset($_POST['submit'])){
    if(!empty($_POST['message'])){
        $message = $user->escapeInput($_POST['message']);
        if($user->insertPost($message,$_SESSION['user'],$_GET['refid'])){
            header("Location:thread.php?refid=".$_GET['refid']);
        }
    }
    else{
        echo "<p style='color:red'>Insert the your reply</p>";
    }
}