<?php
session_start();
include "classes.php";
if (isset($_POST['chattext'])) {
$chat = new chat();
$chat->setchatuserid($_SESSION['userid']);
$chat->setchattext($_POST['chattext']);
$chat->setsender($_SESSION['username']);
$chat->setreceiver($_POST['receiver']);
$chat->insertchatmessage();
//saves all the chat messages with session username and receiver name in data table by calling the function in classes.php
}