src/Filter/TimestampImage.php
protected function _timestamp($filepath, $path)
    {
        if (strpos($path, '?') === false) {
            $path .= '?t=' . filemtime($filepath);
        }
        return $path;
    }
protected function _timestamp($filepath, $path)
    {
        if (strpos($path, '?') === false) {
            $path .= '?t=' . filemtime($filepath);
        }
        return $path;
    }
protected function _timestamp ( $ filepath , $ path ) { if ( strpos ( $ path , '?' ) === false ) { $ path .= '?t=' . filemtime ( $ filepath ) ; } return $ path ; }
Add timestamps to the given path. Will not change paths with
querystrings, as they could have anything in them or be customized
already.

@param string $filepath The absolute path to the file for timestamping
@param string $path The path to append a timestamp to.
@return string Path with a timestamp.
Add timestamps to the given path . Will not change paths with querystrings as they could have anything in them or be customized already .