//core.inc.php

<?php

require('includes/database/connect.db.php');
require('includes/functions/chat.func.php');

?>

//connect.db.php

<?php

    $db_host = 'localhost';
    $db_user = 'root';
    $db_pass = '';
    $db_name = 'chat';

    $conn = mysqli_connect($db_host, $db_user, $db_pass, $db_name);

    if(!$conn) {
        die('Connection failed: ').mysqli_connect_error();
    }
    echo "Connected succesfully";
?>


//chat.func.php

<?php

    function get_msg() {

        $query = "SELECT 'Sender', 'Message' FROM 'chat'";

        $run = mysqli_query($conn, $query);

        $messages = array();

        while($message = mysqli_fetch_assoc($run)) {

            $messages[] = array('sender' => $message['Sender'],
                                'message' => $message['Message']);
        }

        return $messages;

    }

    function send_msg($sender, $message) {

        if(!empty($sender) && !empty($message)) {

            $sender = mysqli_real_escape_string($conn, $sender);
            $message = mysqli_real_escape_string($conn, $message);

            $query = "INSERT INTO 'chat' VALUES ('$sender', '$message');";


            if ($run = mysqli_query($conn, $query)) {
                return true;
            } else {
                echo mysqli_errno($conn).":".mysqli_error($conn)."\n";
                return false;
            }

        } else {
            echo 'toka';
            return false;
        }
    }
?>

//index.php

<?php

require('includes/core.inc.php');

if(isset($_POST['send'])) {
    if(send_msg($_POST['sender'], $_POST['message'])) {
        echo 'Messages Sent.';
    } else {
        echo 'Message failed to sent.';
    }
}

?>

<div id="messages">
    <?php
    $messages = get_msg();
    foreach($messages as $message) {
        echo '<strong>'.$message['sender'].'Sent</strong><br />';
        echo $message['message'].'<br /><br />';
    }
    ?>

    </div><!--Messages-->

<form action="index.php" method="post">
    <label>Enter Name: <input type="text" name="sender" /></label>
    <label>Enter Message:<input type="text" name="message" /></label>
    <input type="submit" name="send" value="Send Message" />
</form>