In WordPress, the WP_Feed_Cache class uses the WP_Feed_Cache_Transient class to store the results into a transient. So, short answer, either in the database or in the Object Cache if you have a persistent object cache stored. If you need to cache something for a period of time, use a transient. http://codex.wordpress.org/Transients_API
I don’t see anything to suggest that fetch_feed is supposed to accept an array of values. That is not mentioned in the Codex, nor the source, @param string $url URL to retrieve feed. That said, fetch_feed passes things off to SimplePie’s set_feed_url($url); which does accept an array. And that Simplepie docs page is, I think, … Read more
SimplePie for a long time is not truly an independent project as it was fully assimilated into wordpress. Not sure that there is any new development for it, but if there is it is unlikely to be any different than what it is at the latest wordpress core.
Cache duration value (defaults to 43200 seconds) is set when feed object is generated and passed through wp_feed_cache_transient_lifetime filter with additional argument being feed URL. This allows to conveniently filter it both globally and for specific feeds. See fetch_feed() source for this and other hooks you can use to modify its behavior.
You could simply use fetch_feed() that implements it’s own extension of SimplePie_Cache: $feed = new SimplePie(); … $feed->set_cache_class( ‘WP_Feed_Cache’ ); … $feed->set_feed_url( $url ); … $feed->set_cache_duration( apply_filters( ‘wp_feed_cache_transient_lifetime’, 12 * HOUR_IN_SECONDS, $url ) ); that caches the feeds with set_transient().
Best way would probably be to use the built in Internationalization function in WordPress. This will then translate according to the language pack being used. The “U” character to a date() call gives the unix timestamp, which is just what you need in this case, for passing to date_i18n(). For example: echo date_i18n(‘j F Y … Read more
include_once(ABSPATH.WPINC.’/feed.php’); $rss = fetch_feed(‘http://gdata.youtube.com/feeds/base/users/silviavaldemoros/uploads?alt=rss&v=2&orderby=published&client=ytapi-youtube-profile&max-results=50’); $maxitems = $rss->get_item_quantity(50); $rss_items = $rss->get_items(0, $maxitems); print_r($rss_items); Try this code..
Ok, found. I spent hours on this but I managed to find the solution. The command I was looking for was $rss->enable_order_by_date(false);. So you should set (for benefit of the community): <?php /* include the required file */ include_once(ABSPATH . WPINC . ‘/feed.php’); /* specify the source feed */ $rss = fetch_feed(‘FEED_URL’); /* disable order … Read more
Getting Post Thumbnail from RSS feed with SimplePie
WordPress uses SimplePie for reading feeds, not for generating feeds. You’re looking at two different things here: You want to output your custom post meta in an RSS feed. You want to read that custom post meta somewhere else. The first part is pretty easy. WordPress supports custom RSS feed templates. You can actually replace … Read more