src/Output/AssetWriter.php
protected function _timestampFile($file, $time)
    {
        if (!$time) {
            return $file;
        }
        $pos = strrpos($file, '.');
        $name = substr($file, 0, $pos);
        $ext = substr($file, $pos);
        return $name . '.v' . $time . $ext;
    }
protected function _timestampFile($file, $time)
    {
        if (!$time) {
            return $file;
        }
        $pos = strrpos($file, '.');
        $name = substr($file, 0, $pos);
        $ext = substr($file, $pos);
        return $name . '.v' . $time . $ext;
    }
protected function _timestampFile ( $ file , $ time ) { if ( ! $ time ) { return $ file ; } $ pos = strrpos ( $ file , '.' ) ; $ name = substr ( $ file , 0 , $ pos ) ; $ ext = substr ( $ file , $ pos ) ; return $ name . '.v' . $ time . $ ext ; }
Modify a file name and append in the timestamp

@param string $file The filename.
@param int $time The timestamp.
@return string The build filename to cache on disk.
Modify a file name and append in the timestamp