Making an Exam: Login

Question

Hey everyone! I am new at this and I wanted some help with a couple of things. So I tried to make an exam and I came up with a few issues. The exam is located here: http://ehsa.net76.net/dntests/adminexam2.php .
One problem is that I don't know how to make the login and input usernames and passwords. How do I make the Start Exam button work so when an appropriate username and password are entered it takes you to the test.
Thanks so much!

Answer 1

in flash you would use something like:
function loginF():void{
var urlRequest:URLRequest = new URLRequest(login.php);
var urlVar:URLVariables = new URLVariables();
urlVar.username = username_tf.text;
urlVar.password = password_tf.text;
urlRequest.method = URLRequestMethod.POST;
urlRequest.data = urlVar;
var urlLoader:URLLoader = new URLLoader(urlRequest);
urlLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
urlLoader.addEventListener(Event.COMPLETE,loginCompleteF);
function loginCompleteF(e:Event):void{
if(e.target.data.login){//do whatever.  login valid
} else {
// invalid login try.
and in your login.php you open your sqlconnection to your database, select your database,  parse the posted variables and check if the username/password match a database entry.  something like:
<?php
$dbServer="yourserver.com";
$dbUsername="yourusername";
$dbPass="yourdatabasepassword";
$tableName = "Users";
mysql_connect($dbServer, $dbUsername, $dbPass) or die(mysql_error());
mysql_select_db($dbName) or die(mysql_error());
foreach ($_POST as $key => $value) {
$$key = $value;
$$key = mysql_real_escape_string($$key);
$result = mysql_query("SELECT * FROM " .$tableName. " WHERE username = '" .$username. "' AND password = '" .$password. "'") or die(mysql_error()); 
$echoS = "false";
while($row = mysql_fetch_array($result)){
$echoS ="true";
echo "login=".$echoS;
mysql_close();
?>