public function executeCss() { // this retrieves the filename of the latest public CSS file $publicCssFilename = shell_exec('ls -1 -tr ' . sfConfig::get('sf_web_dir') . '/css/all_public*'); $publicCssFilename = trim(basename($publicCssFilename)); $mainHttpHost = PcUtils::mainUrlFromOtherApplication(); $this->publicCssUrl = 'http://' . $mainHttpHost . '/css/' . $publicCssFilename; }