diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-includes/SimplePie/src/Cache/DB.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/SimplePie/src/Cache/DB.php	Fri Sep 05 18:52:52 2025 +0200
@@ -0,0 +1,121 @@
+<?php
+
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 	* Redistributions of source code must retain the above copyright notice, this list of
+ * 	  conditions and the following disclaimer.
+ *
+ * 	* Redistributions in binary form must reproduce the above copyright notice, this list
+ * 	  of conditions and the following disclaimer in the documentation and/or other materials
+ * 	  provided with the distribution.
+ *
+ * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
+ * 	  to endorse or promote products derived from this software without specific prior
+ * 	  written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
+ * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package SimplePie
+ * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Sam Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+namespace SimplePie\Cache;
+
+/**
+ * Base class for database-based caches
+ *
+ * @package SimplePie
+ * @subpackage Caching
+ * @deprecated since SimplePie 1.8.0, use implementation of "Psr\SimpleCache\CacheInterface" instead
+ */
+abstract class DB implements Base
+{
+    /**
+     * Helper for database conversion
+     *
+     * Converts a given {@see SimplePie} object into data to be stored
+     *
+     * @param \SimplePie\SimplePie $data
+     * @return array First item is the serialized data for storage, second item is the unique ID for this item
+     */
+    protected static function prepare_simplepie_object_for_cache($data)
+    {
+        $items = $data->get_items();
+        $items_by_id = [];
+
+        if (!empty($items)) {
+            foreach ($items as $item) {
+                $items_by_id[$item->get_id()] = $item;
+            }
+
+            if (count($items_by_id) !== count($items)) {
+                $items_by_id = [];
+                foreach ($items as $item) {
+                    $items_by_id[$item->get_id(true)] = $item;
+                }
+            }
+
+            if (isset($data->data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['feed'][0])) {
+                $channel = &$data->data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['feed'][0];
+            } elseif (isset($data->data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['feed'][0])) {
+                $channel = &$data->data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['feed'][0];
+            } elseif (isset($data->data['child'][\SimplePie\SimplePie::NAMESPACE_RDF]['RDF'][0])) {
+                $channel = &$data->data['child'][\SimplePie\SimplePie::NAMESPACE_RDF]['RDF'][0];
+            } elseif (isset($data->data['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['rss'][0]['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['channel'][0])) {
+                $channel = &$data->data['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['rss'][0]['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['channel'][0];
+            } else {
+                $channel = null;
+            }
+
+            if ($channel !== null) {
+                if (isset($channel['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['entry'])) {
+                    unset($channel['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['entry']);
+                }
+                if (isset($channel['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['entry'])) {
+                    unset($channel['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['entry']);
+                }
+                if (isset($channel['child'][\SimplePie\SimplePie::NAMESPACE_RSS_10]['item'])) {
+                    unset($channel['child'][\SimplePie\SimplePie::NAMESPACE_RSS_10]['item']);
+                }
+                if (isset($channel['child'][\SimplePie\SimplePie::NAMESPACE_RSS_090]['item'])) {
+                    unset($channel['child'][\SimplePie\SimplePie::NAMESPACE_RSS_090]['item']);
+                }
+                if (isset($channel['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['item'])) {
+                    unset($channel['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['item']);
+                }
+            }
+            if (isset($data->data['items'])) {
+                unset($data->data['items']);
+            }
+            if (isset($data->data['ordered_items'])) {
+                unset($data->data['ordered_items']);
+            }
+        }
+        return [serialize($data->data), $items_by_id];
+    }
+}
+
+class_alias('SimplePie\Cache\DB', 'SimplePie_Cache_DB');