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<?php |
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namespace CodeBlog\FeedRss; |
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use \DOMDocument; |
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use DOMElement; |
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/** |
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* Class CodeBlog FeedRss |
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* |
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* @author Whallysson Avelino <https://github.com/whallysson> |
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* @package CodeBlog\FeedRss |
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*/ |
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class FeedRss |
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{ |
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/** @var */ |
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protected $rss; |
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/** @var */ |
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protected $xml; |
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/** @var */ |
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protected $channel; |
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/** @var string */ |
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protected $title; |
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/** @var string */ |
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protected $link; |
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/** @var bool */ |
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protected $googleMerchant = false; |
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/** @var bool */ |
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protected $facebookAds = false; |
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/** |
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* FeedRss constructor. |
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* @param bool|null $facebookAds |
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* @param bool|null $googleMerchant |
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*/ |
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public function __construct(?bool $facebookAds = false, ?bool $googleMerchant = false) |
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{ |
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$this->xml = new DOMDocument('1.0', 'utf-8'); |
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$this->xml->formatOutput = true; |
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//Rss |
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$this->rss = $this->xml->createElement('rss'); |
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$this->rss->setAttribute('version', '2.0'); |
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$this->rss->setAttribute('xmlns:dc', 'http://purl.org/dc/elements/1.1'); |
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if ($facebookAds) { |
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$this->facebookAds = true; |
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} |
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if ($googleMerchant) { |
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$this->googleMerchant = true; |
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$this->rss->setAttribute('xmlns:g', 'http://base.google.com/ns/1.0'); |
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} |
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} |
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/** |
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* @param string $title |
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* @param string $link |
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* @param string $description |
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* @param string|null $language |
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*/ |
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public function setChannel(string $title, string $link, string $description, ?string $language = 'pt-BR'): void |
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{ |
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$this->title = $title; |
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$this->link = $link; |
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// channel |
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$this->channel = $this->xml->createElement('channel'); |
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$this->channel->appendChild( |
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$this->xml->createElement('title', $title) |
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); |
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$this->channel->appendChild( |
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$this->xml->createElement('link', $link) |
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); |
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$this->channel->appendChild( |
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$this->xml->createElement('description', $description) |
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); |
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$this->channel->appendChild( |
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$this->xml->createElement('language', $language) |
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); |
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$this->rss->appendChild($this->channel); |
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} |
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/** |
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* @param string $url |
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* @param string|null $title |
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* @param string|null $link |
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*/ |
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public function setChannelImage(string $url, ?string $title = null, ?string $link = null): void |
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{ |
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if (!empty($this->channel)) { |
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$image = $this->xml->createElement('image'); |
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$image->appendChild($this->xml->createElement('title', (!empty($title) ? $title : $this->title))); |
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$image->appendChild($this->xml->createElement('link', (!empty($link) ? $link : $this->link))); |
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$image->appendChild($this->xml->createElement('url', $url)); |
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$this->channel->appendChild($image); |
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} |
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} |
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/** |
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* @param array $data |
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*/ |
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public function renderRss(array $data): void |
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{ |
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if (empty($data)) { |
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return; |
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} |
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$data = json_decode(json_encode($data)); |
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// Items |
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foreach ($data as $item) { |
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$title = $this->strLimitChars($this->strClean($item->title), 150, ''); |
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$description = $this->strLimitChars($this->strClean($item->description), 5000, ''); |
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// item element |
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$itemElement = $this->xml->createElement("item"); |
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// title |
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$itemElement->appendChild($this->xml->createElement('title', $title)); |
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// description Element |
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$itemDescription = $this->xml->createElement('description'); |
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$itemDescription->appendChild($this->xml->createCDATASection($description)); |
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$itemElement->appendChild($itemDescription); |
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$dtPub = date('D, d M Y H:i:s O', strtotime($item->publication)); |
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$itemElement->appendChild($this->xml->createElement('pubDate', $dtPub)); |
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// enclosure |
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$itemEnclosure = $this->xml->createElement('enclosure'); |
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$itemEnclosure->setAttribute('url', $item->image->url); |
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$itemEnclosure->setAttribute('type', 'image/*'); |
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$itemEnclosure->setAttribute('length', 0); |
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$itemElement->appendChild($itemEnclosure); |
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// image |
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$itemImage = $this->xml->createElement('image'); |
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$imageTitle = $this->xml->createElement('title'); |
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$imageTitle->appendChild($this->xml->createCDATASection($item->image->title)); |
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$itemImage->appendChild($this->xml->createElement('link', $item->link)); |
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$itemImage->appendChild($this->xml->createElement('url', $item->image->url)); |
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$itemImage->appendChild($imageTitle); |
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$itemElement->appendChild($itemImage); |
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//image - end |
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// others |
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$itemElement->appendChild($this->xml->createElement('link', $item->link)); |
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$itemElement->appendChild($this->xml->createElement('guid', $item->link)); |
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//FB ADS PRODUCTS |
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if ($this->facebookAds && !empty($item->facebook_ads)) { |
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$this->setFacebookAds($itemElement, $item->facebook_ads); |
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} |
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// GOOGLE MERCHANT |
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if ($this->googleMerchant && !empty($item->google_merchant)) { |
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$this->setGoogleMerchant($itemElement, $item->google_merchant, $title, $description); |
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} |
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$this->channel->appendChild($itemElement); |
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} |
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$this->xml->appendChild($this->rss); |
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header('Content-type: text-xml'); |
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echo $this->xml->saveXML(); |
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} |
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/** |
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* @param DOMElement $itemElement |
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* @param object $item |
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*/ |
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private function setFacebookAds(DOMElement $itemElement, object $item): void |
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{ |
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/* |
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* https://www.facebook.com/business/help/120325381656392?id=725943027795860 |
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* Items required: |
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* id, title, description, availability, condition, price, link, image_link, brand |
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*/ |
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$required = ['id', 'availability', 'condition', 'price', 'image_link', 'brand']; |
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$itemElement->appendChild($this->xml->createElement('id', $item->id)); |
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$itemElement->appendChild($this->xml->createElement('image_link', $item->image_link)); |
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$itemElement->appendChild($this->xml->createElement('condition', $item->condition)); // new, refurbished, used. |
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$itemElement->appendChild($this->xml->createElement('price', $item->price)); |
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$itemElement->appendChild($this->xml->createElement('availability', |
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$item->availability)); // in stock | out of stock |
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$itemElement->appendChild($this->xml->createElement('brand', htmlspecialchars($item->brand))); |
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foreach ($item as $key => $value) { |
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if (!in_array($key, $required)) { |
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$itemElement->appendChild($this->xml->createElement($key, $value)); |
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} |
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} |
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} |
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/** |
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* @param DOMElement $itemElement |
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* @param object $item |
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* @param string $title |
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* @param string $description |
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*/ |
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private function setGoogleMerchant(DOMElement $itemElement, object $item, string $title, string $description): void |
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{ |
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$required = ['title', 'description']; |
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$itemElement->appendChild($this->xml->createElement('g:title', $title)); |
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$gItemDescription = $this->xml->createElement('g:description'); |
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$gItemDescription->appendChild($this->xml->createCDATASection($description)); |
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$itemElement->appendChild($gItemDescription); |
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foreach ($item as $key => $value) { |
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if (!in_array($key, $required)) { |
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$itemElement->appendChild($this->xml->createElement("g:{$key}", $value)); |
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} |
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} |
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} |
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/** |
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* @param string $string |
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* @param int $limit |
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* @param string $pointer |
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* @return string |
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*/ |
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private function strLimitChars(string $string, int $limit, string $pointer = "..."): string |
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{ |
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$string = trim(filter_var($string, FILTER_SANITIZE_SPECIAL_CHARS)); |
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if (mb_strlen($string) <= $limit) { |
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return $string; |
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} |
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$chars = mb_substr($string, 0, mb_strrpos(mb_substr($string, 0, $limit), " ")); |
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return "{$chars}{$pointer}"; |
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} |
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/** |
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* @param string $string |
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* @return string |
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*/ |
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private function strClean(string $string): string |
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{ |
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return str_replace('&', 'e', htmlspecialchars($string)); |
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} |
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} |