Pop\Feed\Writer::init PHP Метод

    protected function init()
    {
        if ($this->feedType == Writer::RSS) {
            // Set up the RSS child node.
            $rss = new Child('rss');
            $rss->setAttributes('version', '2.0');
            $rss->setAttributes('xmlns:content', 'http://purl.org/rss/1.0/modules/content/');
            $rss->setAttributes('xmlns:wfw', 'http://wellformedweb.org/CommentAPI/');
            // Set up the Channel child node and the header children.
            $channel = new Child('channel');
            foreach ($this->headers as $key => $value) {
                $channel->addChild(new Child($key, $value));
            }
            // Set up the Item child nodes and add them to the Channel child node.
            foreach ($this->items as $itm) {
                $item = new Child('item');
                foreach ($itm as $key => $value) {
                    $item->addChild(new Child($key, $value));
                }
                $channel->addChild($item);
            }
            // Add the Channel child node to the RSS child node, add the RSS child node to the DOM.
            $rss->addChild($channel);
            $this->addChild($rss);
        } else {
            if ($this->feedType == Writer::ATOM) {
                // Set up the Feed child node.
                $feed = new Child('feed');
                $feed->setAttributes('xmlns', 'http://www.w3.org/2005/Atom');
                if (isset($this->headers['language'])) {
                    $feed->setAttributes('xml:lang', $this->headers['language']);
                }
                // Set up the header children.
                foreach ($this->headers as $key => $value) {
                    if ($key == 'author') {
                        $auth = new Child($key);
                        $auth->addChild(new Child('name', $value));
                        $feed->addChild($auth);
                    } else {
                        if ($key == 'link') {
                            $link = new Child($key);
                            $link->setAttributes('href', $value);
                            $feed->addChild($link);
                        } else {
                            if ($key != 'language') {
                                $val = stripos($key, 'date') !== false || stripos($key, 'published') !== false ? date($this->dateFormat, strtotime($value)) : $value;
                                $feed->addChild(new Child($key, $val));
                            }
                        }
                    }
                }
                // Set up the Entry child nodes and add them to the Feed child node.
                foreach ($this->items as $itm) {
                    $item = new Child('entry');
                    foreach ($itm as $key => $value) {
                        if ($key == 'link') {
                            $link = new Child($key);
                            $link->setAttributes('href', $value);
                            $item->addChild($link);
                        } else {
                            $val = stripos($key, 'date') !== false || stripos($key, 'published') !== false ? date($this->dateFormat, strtotime($value)) : $value;
                            $item->addChild(new Child($key, $val));
                        }
                    }
                    $feed->addChild($item);
                }
                // Add the Feed child node to the DOM.
                $this->addChild($feed);
            } else {
                if ($this->feedType == Writer::JSON || $this->feedType == Writer::PHP) {
                    // Set up the header data.
                    foreach ($this->headers as $key => $value) {
                        $val = stripos($key, 'date') !== false || stripos($key, 'published') !== false ? date($this->dateFormat, strtotime($value)) : $value;
                        $this->data[$key] = $val;
                    }
                    // Set up the items data
                    $this->data['items'] = array();
                    foreach ($this->items as $itm) {
                        foreach ($itm as $key => $value) {
                            $val = stripos($key, 'date') !== false || stripos($key, 'published') !== false ? date($this->dateFormat, strtotime($value)) : $value;
                            $itm[$key] = $val;
                        }
                        $this->data['items'][] = $itm;
                    }
                    // Set the content type
                    $this->contentType = $this->feedType == Writer::JSON ? 'application/json' : 'text/plain';
                } else {
                    throw new Exception('Error: The feed type must be only RSS, ATOM, JSON or PHP.');
                }
            }
        }
    }