php 检索多个RSS源

Posted 2021-05-04

<?php

/**
 * Retrieve RSS feed items.
 *
 * @param array $feeds
 *   An array of feeds to be included.
 *
 * @example get_rss_feed( array( 'path/to/rss/feed.xml' ) );
 *
 * @return array
 */
function get_rss_feed( $feeds = array() ) {
  $items = array();

  foreach ( $feeds as $feed ) {
    $xml = (array) new SimpleXmlElement( file_get_contents( $feed ) );
    foreach ( $xml['channel']->item as $item ) {
      $items[] = (array) $item;
    }
  }

  usort( $items, function ( $a, $b ) {
    $a = strtotime( $a['pubDate'] );
    $b = strtotime( $b['pubDate'] );
    return $b - $a;
  } );

  return $items;
}