phpQueryObject::attrPHP PHP Method

    public function attrPHP($attr, $code)
    {
        if (!is_null($code)) {
            $value = '<' . '?php ' . $code . ' ?' . '>';
            // TODO tempolary solution
            // http://code.google.com/p/phpquery/issues/detail?id=17
            //			if (function_exists('mb_detect_encoding') && mb_detect_encoding($value) == 'ASCII')
            //				$value	= mb_convert_encoding($value, 'UTF-8', 'HTML-ENTITIES');
        }
        foreach ($this->stack(1) as $node) {
            if (!is_null($code)) {
                //				$attrNode = $this->DOM->createAttribute($attr);
                $node->setAttribute($attr, $value);
                //				$attrNode->value = $value;
                //				$node->appendChild($attrNode);
            } elseif ($attr == '*') {
                // jQuery diff
                $return = array();
                foreach ($node->attributes as $n => $v) {
                    $return[$n] = $v->value;
                }
                return $return;
            } else {
                return $node->getAttribute($attr);
            }
        }
        return $this;
    }