public static function log($ar, $deleteOldData = false, $filename = LOG_FILENAME)
{
if (self::$firstRun && $deleteOldData) {
file_put_contents($_SERVER['DOCUMENT_ROOT'] . $filename, print_r($ar, true) . "\n\n");
} else {
file_put_contents($_SERVER['DOCUMENT_ROOT'] . $filename, print_r($ar, true) . "\n\n", FILE_APPEND);
}
self::$firstRun = false;
}
