RSS and Atom feed helper.
Class declared in SYSPATH/classes/Feed.php on line 3.
Creates a feed from the given parameters.
array
$info
required - Feed information array
$items
required - Items to add to the feed string
$encoding
= string(5) "UTF-8" - Define which encoding to use stringpublic static function create($info, $items, $encoding = 'UTF-8')
{
$info += ['title' => 'Generated Feed', 'link' => '', 'generator' => 'KohanaPHP'];
$feed = '<?xml version="1.0" encoding="' . $encoding . '"?><rss version="2.0"><channel></channel></rss>';
$feed = simplexml_load_string($feed);
foreach ($info as $name => $value) {
if ($name === 'image') {
// Create an image element
$image = $feed->channel->addChild('image');
if (!isset($value['link'], $value['url'], $value['title'])) {
throw new Kohana_Exception('Feed images require a link, url, and title');
}
if (strpos($value['link'], '://') === false) {
// Convert URIs to URLs
$value['link'] = URL::site($value['link'], 'http');
}
if (strpos($value['url'], '://') === false) {
// Convert URIs to URLs
$value['url'] = URL::site($value['url'], 'http');
}
// Create the image elements
$image->addChild('link', $value['link']);
$image->addChild('url', $value['url']);
$image->addChild('title', $value['title']);
} else {
if (($name === 'pubDate' OR $name === 'lastBuildDate') AND ( is_int($value) OR ctype_digit($value))) {
// Convert timestamps to RFC 822 formatted dates
$value = date('r', $value);
} elseif (($name === 'link' OR $name === 'docs') AND strpos($value, '://') === false) {
// Convert URIs to URLs
$value = URL::site($value, 'http');
}
// Add the info to the channel
$feed->channel->addChild($name, $value);
}
}
foreach ($items as $item) {
// Add the item to the channel
$row = $feed->channel->addChild('item');
foreach ($item as $name => $value) {
if ($name === 'pubDate' AND ( is_int($value) OR ctype_digit($value))) {
// Convert timestamps to RFC 822 formatted dates
$value = date('r', $value);
} elseif (($name === 'link' OR $name === 'guid') AND strpos($value, '://') === false) {
// Convert URIs to URLs
$value = URL::site($value, 'http');
}
// Add the info to the row
$row->addChild($name, $value);
}
}
if (function_exists('dom_import_simplexml')) {
// Convert the feed object to a DOM object
$feed = dom_import_simplexml($feed)->ownerDocument;
// DOM generates more readable XML
$feed->formatOutput = true;
// Export the document as XML
$feed = $feed->saveXML();
} else {
// Export the document as XML
$feed = $feed->asXML();
}
return $feed;
}Parses a remote feed into an array.
string
$feed
required - Remote feed URL integer
$limit
= integer 0 - Item limit to fetch arraypublic static function parse($feed, $limit = 0)
{
// Check if SimpleXML is installed
if (!function_exists('simplexml_load_file'))
throw new Kohana_Exception('SimpleXML must be installed!');
// Make limit an integer
$limit = (int) $limit;
// Disable error reporting while opening the feed
$error_level = error_reporting(0);
// Allow loading by filename or raw XML string
if (Valid::url($feed)) {
// Use native Request client to get remote contents
$response = Request::factory($feed)->execute();
$feed = $response->body();
} elseif (is_file($feed)) {
// Get file contents
$feed = file_get_contents($feed);
}
// Load the feed
$feed = simplexml_load_string($feed, 'SimpleXMLElement', LIBXML_NOCDATA);
// Restore error reporting
error_reporting($error_level);
// Feed could not be loaded
if ($feed === false)
return [];
$namespaces = $feed->getNamespaces(true);
// Detect the feed type. RSS 1.0/2.0 and Atom 1.0 are supported.
$feed = isset($feed->channel) ? $feed->xpath('//item') : $feed->entry;
$i = 0;
$items = [];
foreach ($feed as $item) {
if ($limit > 0 AND $i++ === $limit)
break;
$item_fields = (array) $item;
// get namespaced tags
foreach ($namespaces as $ns) {
$item_fields += (array) $item->children($ns);
}
$items[] = $item_fields;
}
return $items;
}