<?php

require_once "include/xmldocument.php";
require_once "include/forminterpreter.php";

define('FI_SESSION', 'FormInterpreter');

session_start();

function var_dump_file(&$expr, $file)
{
    $buf=var_export(&$expr, true);
    $f=fopen($file, 'w');
    fwrite($f, $buf);
    fclose($f);
}

if (isset($_POST['next']) && isset($_SESSION[FI_SESSION]))
{
    $f=&$_SESSION[FI_SESSION];
    
//     var_dump_file($f, 'after.txt');
    
    $f->processForm();
}
else
{
    $f=&new FormInterpreter('applicationform.xml');
    $_SESSION[FI_SESSION]=&$f;
}

// var_dump_file($f, 'before.txt');

if ($f->isFormFinished())
{
    //Do something fun
    echo "Form is finished.";
}
else $f->renderForm();

// register_shutdown_function('flush');

?>