T_CONSTANT_ENCAPSED_STRING Error

I can't figure out this error:

Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in C:\Program Files\Abyss Web Server\htdocs\forum\login\validate.php on line 12


This is my code:

<?php

//get input data
$user=$_POST["username"];
$pass=$_POST["password"];

//encrypt username and pass
$cuser=md5($user);
$cpass=md5($pass);

//include login file
include($user".php");

//make sure info matches and changes user's logged in file to 1
if ($cuser==$realuser && $cpass==$realpass)
{
$File = $user"ok.txt";
$Handle = fopen($File, 'w');
$Data = "0";
fwrite($Handle, $Data);
fclose($Handle);

//redirect to main.php
header( 'Location: main.php' );

?>

Thanks for any help

 

Try changing this line
include($user".php");
to this:
include $user . ".php";
Then the $File = line will have to be changed too.
$File = $user . "ok.txt";

 

thanks. that really helped