$obj = rtrim($obj, ", ") . " ],";
        /* add the answer */
        $obj .= "\n{$tab3}{$quote}" . "answer{$quote}: {$quote}{$questionAnswer}{$quote}" . "\n{$tab2}},";
    }
    $obj = rtrim($obj, ",");
    $obj .= "\n{$tab}]" . "\n}";
    $fh = fopen("../data/review01.json", "w");
    $err = fwrite($fh, $obj);
    fclose($fh);
    return $err;
}
function displayConfirmationMessage($message)
{
    echo <<<_HD
\t\t<!DOCTYPE html>
\t\t<html>
\t\t<head>
\t\t<title>Save Status</title>
\t\t<link rel="stylesheet" href="../css/site.css">
\t\t</head>
\t\t<body>
\t\t<div id="save-status-message">{$message}</div>
\t\t</body>
\t\t</html>
_HD;
}
if (writeJSONFile() !== false) {
    displayConfirmationMessage("JSON file created successfuly.");
} else {
    displayConfirmationMessage("Unable to create JSON file");
}
    }
}
if (!isset($argv[1]) || !isset($argv[2])) {
    throw new Exception('Please pass in two arguments: the input .tmx file and the output .json file.');
}
$inputTMXFile = $argv[1];
$outputJSONFile = $argv[2];
$doc = new DOMDocument('1.0', 'ISO-8859-1');
$handle = fopen($inputTMXFile, 'r');
if (!$doc->loadXML(fread($handle, filesize($inputTMXFile)))) {
    throw new Exception('Error reading master.tmx file.');
}
$json = array();
$tus = $doc->getElementsByTagName('tu');
foreach ($tus as $tu) {
    $obj = new stdClass();
    if ($tu->hasAttribute('tuid')) {
        $obj->variable = createVariableName($tu->getAttribute('tuid'));
        $obj->en = $tu->getAttribute('tuid');
        $currentTuv = $tu->firstChild;
        if ($tu->firstChild != null && $tu->firstChild->firstChild != null) {
            if ($tu->firstChild->hasAttribute('xml:lang')) {
                $lang = $tu->firstChild->getAttribute('xml:lang');
                $obj->{$lang} = $tu->firstChild->firstChild->textContent;
            }
        }
    }
    $json[] = str_replace('":"', '": "', str_replace('"}', "\"\n}", str_replace('{"', "{\n\t\"", str_replace('",', "\",\n\t", json_encode($obj, JSON_UNESCAPED_UNICODE)))));
}
writeJSONFile($outputJSONFile, "[" . join(",", $json) . "]");