[wp-trac] [WordPress Trac] #64136: PHP Deprecated: Fetching multiple feeds with single SimplePie instance is deprecated since SimplePie 1.9.0

[WordPress Trac]

#64136: PHP Deprecated:  Fetching multiple feeds with single SimplePie instance is
deprecated since SimplePie 1.9.0
--------------------------+------------------------------
 Reporter:  muryam        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:  administration
--------------------------+------------------------------

Comment (by ax3yui8stk):

 Example change (in wp-includes/feed.php or where multiple feeds are
 fetched):

 {{{#!php
 <?php
 // Old (deprecated since SimplePie 1.9.0)
 $feed = fetch_feed( array(
     'https://wordpress.org/news/feed/',
     'https://planet.wordpress.org/feed/'
 ) );
 }}}

 Replace with:

 {{{#!php
 <?php
 // New: create separate instances for each feed
 $feeds = array(
     'https://wordpress.org/news/feed/',
     'https://planet.wordpress.org/feed/',
 );

 $items = array();

 foreach ( $feeds as $url ) {
     $feed = fetch_feed( $url );
     if ( ! is_wp_error( $feed ) ) {
         $items = array_merge( $items, $feed->get_items( 0, 5 ) );
     }
 }

 }}}


 Result:

 1. Removes the deprecation warning.
 2. Keeps feed display behavior the same.
 3. Future-proofs WordPress for PHP 8.3 and SimplePie 1.9+.
 4. Marking this for patch and testing on WP 6.9 trunk

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/64136#comment:2>
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