Importing Feeds¶
Zend\Feed
enables developers to retrieve feeds very easily, by using Zend\Feader\Reader
.
If you know the URI of a feed, simply use the Zend\Feed\Reader\Reader::import()
method:
1 | $feed = Zend\Feed\Reader\Reader::import('http://feeds.example.com/feedName');
|
You can also use Zend\Feed\Reader\Reader
to fetch the contents of a feed from a file or the contents of a PHP
string variable:
1 2 3 4 5 | // importing a feed from a text file
$feedFromFile = Zend\Feed\Reader\Reader::importFile('feed.xml');
// importing a feed from a PHP string variable
$feedFromPHP = Zend\Feed\Reader\Reader::importString($feedString);
|
In each of the examples above, an object of a class that extends Zend\Feed\Reader\Feed\AbstractFeed
is
returned upon success, depending on the type of the feed. If an RSS feed were retrieved via one of the
import methods above, then a Zend\Feed\Reader\Feed\Rss
object would be returned. On the other hand,
if an Atom feed were imported, then a Zend\Feed\Reader\Feed\Atom
object is returned. The import methods
will also throw a Zend\Feed\Exception\Reader\RuntimeException
object upon failure, such as an unreadable
or malformed feed.
Dumping the contents of a feed¶
To dump the contents of a Zend\Feed\Reader\Feed\AbstractFeed
instance, you may use the saveXml()
method.
1 2 3 4 | assert($feed instanceof Zend\Feed\Reader\Feed\AbstractFeed);
// dump the feed to standard output
print $feed->saveXml();
|