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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:

System Message: ERROR/3 (<string>, line 9)

Error in "code-block" directive: unknown option: "linenos".

.. code-block:: php

   $feed = Zend\Feed\Reader\Reader::import('');

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:

System Message: ERROR/3 (<string>, line 17)

Error in "code-block" directive: unknown option: "linenos".

.. code-block:: php

   // 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.

System Message: ERROR/3 (<string>, line 40)

Error in "code-block" directive: unknown option: "linenos".

.. code-block:: php

   assert($feed instanceof Zend\Feed\Reader\Feed\AbstractFeed);

   // dump the feed to standard output
   print $feed->saveXml();

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