Untitled

<?php
    // Includes.
    require_once("error_reporting.php"); //Initialize error reporting.
    include("../functions/dbconnection.php");  //Access database connection.

    //Get client's contact details from form.
             $firstName = $_POST['firstName'];
             $lastName = $_POST['lastName'];
             $address = $_POST['address'];
             $phoneNumber = $_POST['phoneNumber'];
             $emailAddress = $_POST['emailAddress'];

     //Get client's desired login details from form.
             $userName = $_POST['userName'];
             $password = $_POST['password'];

    //Insert user data into user table.
    $addClient="INSERT INTO client (firstName, lastName, address, phoneNumber, emailAddress)
                VALUES ('$firstName', '$lastName', '$address', '$phoneNumber', '$emailAddress')";

    if(@mysql_query($addClient))
    {
        //If client submits a user name.
        if(isset($userName))
        {
            //Get user ID (clientID(FK))
            $clientID=mysql_insert_id();

            //Insert the user details.
            $addUser="INSERT INTO users (userID, userName, password, clientID)
                      VALUES (NULL, '$userName', '$password', $clientID)";
            $addResult=mysql_query($addUser);
        }

        //Display first name and user name - Used to check if client was added correctly.
        echo "Thank you ".$firstName." your user name is: ".$userName."<br>";
        echo("<p>Client Added.</p>");
    }
    else
    {
        echo("<p>Error adding client: </p>".mysql_error()."</p>");
    }
?>