ZBlogPHP::GetSomeThingByAttr PHP Method

    private function GetSomeThingByAttr(&$object, $attr, $val)
    {
        $val = trim($val);
        foreach ($object as $key => &$value) {
            if (is_null($value)) {
                continue;
            }
            if ($value->{$attr} == $val) {
                return $value;
            }
        }
        return null;
    }