public function lastModified($modified = null)
    {
        if ($modified && $modified > $this->last_modified) {
            $this->last_modified = $modified;
        }

        return $this->last_modified;
    }
public function lastModified($modified = null)
    {
        if ($modified && $modified > $this->last_modified) {
            $this->last_modified = $modified;
        }

        return $this->last_modified;
    }
public function lastModified ( $ modified = null ) { if ( $ modified && $ modified > $ this -> last_modified ) { $ this -> last_modified = $ modified ; } return $ this -> last_modified ; }
Get or set last modification time.

@param int $modified

@return int|null
Get or set last modification time .