index.php

<?php
//Lua Scripting By islanderon
//PHP Scripting By Kingrunes

require_once "config.php"; //Load config making $db object
$user = $_GET['user']; //set user to a varible
$msg = $_GET['msg']; //set message to a varible
$task = $GET['task']; //set message to a varible

//Functions
function isLoggedin(){
    return $_SESSION['isLoggedin'];
}

function login($user,$pass){
    global $user;
    global $msg;
    $db->query("SELECT * FROM users WHERE user = '$user' AND pass = '$pass'");
    $data = $db->Get();
    if ($data[0]['user'] == $user){
        $_SESSION['isLoggedin'] = true;
        return true;
    }else{
    echo "error.2";
    exit;
    }
}

function sendData(){
    $db->query("SELECT * FROM chat LIMIT 5");
    $data = $db->Get();
    foreach ($data as $key -> $dataSet){
        echo $dataSet['user'] . " " . $dataSet['msg'];
    }
}

//End Of Main Functions

if ($task == "get"){
    if (!isLoggedin()){ echo "error.1"; exit; }
    sendData();
}elseif ($task == "login") {
    if (login($user,$pass)) {
    sendData();
    }else{
        echo "error";
    }
}

//$db->query("INSERT INTO chat (user,msg) VALUES('$user','$msg')");
?>