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 informationarray
$items
required - Items to add to the feedstring
$format
= string(4) "rss2" - Define which format to use (only rss2 is supported)string
$encoding
= string(5) "UTF-8" - Define which encoding to usestringpublic static function create($info, $items, $format = 'rss2', $encoding = 'UTF-8')
{
$info += array('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 URLinteger
$limit
= integer 0 - Item limit to fetcharraypublic static function parse($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
$load = (is_file($feed) OR Valid::url($feed)) ? 'simplexml_load_file' : 'simplexml_load_string';
// Load the feed
$feed = $load($feed, 'SimpleXMLElement', LIBXML_NOCDATA);
// Restore error reporting
error_reporting($error_level);
// Feed could not be loaded
if ($feed === FALSE)
return array();
$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;
$items = array();
foreach ($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;
}