Flash/PHP/MySQL login

[bounceboy]

I made two fields, user and pass. when you click login it sends these two fields to a php file.

here is the php file contents:

<?php
$username = $_POST[user];
$password = $_POST[pass];
$con = mysql_connect("SERVER_GOES_HERE",$username,$password);
if (!$con)
  {
  print "&reply=didn't connect"
  }
if($con)
 {
print "&reply=win"
}
mysql_close($con)
?>

As you can see i've replaced the server with SERVER_GOES_HERE.

anyway every time i try it fails straight away saying that the php file didn't respond. what?

Flash actionscript:

sender = new LoadVars();
sender.user = user;
sender.pass = pass;
sender.sendAndLoad("login/login.php",sender,"POST");
sender.onLoad = function(epicwin){
if(epicwin){
if(sender.reply=="win"){
_root.login.gotoAndStop("account");
}else{
error = sender.reply;
gotoAndStop("fail");
}
}else{
error = "There was no response from the server!";
gotoAndStop("fail");
}
}
}

Somebody help!