private function logger($log_content)    {      if(isset($_SERVER['HTTP_APPNAME'])){   //SAE            sae_set_display_errors(false);            sae_debug($log_content);            sae_set_display_errors(true);        }else if($_SERVER['REMOTE_ADDR'] != "127.0.0.1"){ //LOCAL            $max_size = 10000;            $log_filename = "log.xml";            if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}            file_put_contents($log_filename, date('H:i:s')." ".$log_content."\r\n", FILE_APPEND);        }    }