fetch_feed()
最后更新于:2021-11-26 04:05:49
fetch_feed( string|string[]$url)Build SimplePie object based on RSS or Atom feed from URL.
参数
- $url
-
(string|string[]) (Required) URL of feed to retrieve. If an array of URLs, the feeds are merged using SimplePie’s multifeed feature. See also http://simplepie.org/wiki/faq/typical_multifeed_gotchas
响应
(SimplePie|GC_Error) SimplePie object on success or GC_Error object on failure.
源文件
文件: gc-includes/feed.php
function fetch_feed( $url ) {
if ( ! class_exists( 'SimplePie', false ) ) {
require_once ABSPATH . GCINC . '/class-simplepie.php';
}
require_once ABSPATH . GCINC . '/class-gc-feed-cache-transient.php';
require_once ABSPATH . GCINC . '/class-gc-simplepie-file.php';
require_once ABSPATH . GCINC . '/class-gc-simplepie-sanitize-kses.php';
$feed = new SimplePie();
$feed->set_sanitize_class( 'GC_SimplePie_Sanitize_KSES' );
// We must manually overwrite $feed->sanitize because SimplePie's constructor
// sets it before we have a chance to set the sanitization class.
$feed->sanitize = new GC_SimplePie_Sanitize_KSES();
// Register the cache handler using the recommended method for SimplePie 1.3 or later.
if ( method_exists( 'SimplePie_Cache', 'register' ) ) {
SimplePie_Cache::register( 'gc_transient', 'GC_Feed_Cache_Transient' );
$feed->set_cache_location( 'gc_transient' );
} else {
// Back-compat for SimplePie 1.2.x.
require_once ABSPATH . GCINC . '/class-gc-feed-cache.php';
$feed->set_cache_class( 'GC_Feed_Cache' );
}
$feed->set_file_class( 'GC_SimplePie_File' );
$feed->set_feed_url( $url );
/** This filter is documented in gc-includes/class-gc-feed-cache-transient.php */
$feed->set_cache_duration( apply_filters( 'gc_feed_cache_transient_lifetime', 12 * HOUR_IN_SECONDS, $url ) );
/**
* Fires just before processing the SimplePie feed object.
*
* @since 3.0.0
*
* @param SimplePie $feed SimplePie feed object (passed by reference).
* @param string|string[] $url URL of feed or array of URLs of feeds to retrieve.
*/
do_action_ref_array( 'gc_feed_options', array( &$feed, $url ) );
$feed->init();
$feed->set_output_encoding( get_option( 'blog_charset' ) );
if ( $feed->error() ) {
return new GC_Error( 'simplepie-error', $feed->error() );
}
return $feed;
}
<h2><?php _e( 'Recent news from Some-Other Blog:', 'gcdocs_textdomain' ); ?></h2> <?php // Get RSS Feed(s) include_once( ABSPATH . GCINC . '/feed.php' ); // Get a SimplePie feed object from the specified feed source. $rss = fetch_feed( 'http://example.com/rss/feed/goes/here' ); $maxitems = 0; if ( ! is_gc_error( $rss ) ) : // Checks that the object is created correctly // Figure out how many total items there are, but limit it to 5. $maxitems = $rss->get_item_quantity( 5 ); // Build an array of all the items, starting with element 0 (first element). $rss_items = $rss->get_items( 0, $maxitems ); endif; ?> <ul> <?php if ( $maxitems == 0 ) : ?> <li><?php _e( 'No items', 'gcdocs_textdomain' ); ?></li> <?php else : ?> <?php // Loop through each feed item and display each item as a hyperlink. ?> <?php foreach ( $rss_items as $item ) : ?> <li> <a href="https://docs.gechiui.com/functions/fetch_feed/<?php echo esc_url( $item->get_permalink() ); ?>" title="<?php printf( __( 'Posted %s', 'gcdocs_textdomain' ), $item->get_date('j F Y | g:i a') ); ?>"> <?php echo esc_html( $item->get_title() ); ?> </a> </li> <?php endforeach; ?> <?php endif; ?> </ul>