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File Content: `DB.php`

<?php

// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
// SPDX-License-Identifier: BSD-3-Clause

declare(strict_types=1);

namespace SimplePie\Cache;

use SimplePie\Item;

/**
 * Base class for database-based caches
 *
 * @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{string, array<string, Item>} 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(\SimplePie\SimplePie $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');
Name	Size	Permission
Base.php	1878 bytes	0644
BaseDataCache.php	3587 bytes	0644
CallableNameFilter.php	1518 bytes	0644
DB.php	3705 bytes	0644
DataCache.php	2799 bytes	0644
File.php	2977 bytes	0644
Memcache.php	3712 bytes	0644
Memcached.php	3829 bytes	0644
MySQL.php	13703 bytes	0644
NameFilter.php	1175 bytes	0644
Psr16.php	3256 bytes	0644
Redis.php	4305 bytes	0644
File Content: DB.php

File Content: `DB.php`
