function FileCache::getMultiple

Overrides FileCacheInterface::getMultiple

File

core/lib/Drupal/Component/FileCache/FileCache.php, line 77

Class

FileCache

Allows to cache data based on file modification dates.

Namespace

Code

public function getMultiple(array $filepaths) {
    $file_data = [];
    $remaining_cids = [];
    // First load from the static cache what we can.
    foreach ($filepaths as $filepath) {
        if (!file_exists($filepath)) {
            continue;
        }
        $realpath = realpath($filepath);
        // If the file exists but realpath returns nothing, it is using a stream
        // wrapper, those are not supported.
        if (empty($realpath)) {
            continue;
        }
        $cid = $this->prefix . ':' . $this->collection . ':' . $realpath;
        if (isset(static::$cached[$cid]) && static::$cached[$cid]['mtime'] == filemtime($filepath)) {
            $file_data[$filepath] = static::$cached[$cid]['data'];
        }
        else {
            // Collect a list of cache IDs that we still need to fetch from cache
            // backend.
            $remaining_cids[$cid] = $filepath;
        }
    }
    // If there are any cache IDs left to fetch from the cache backend.
    if ($remaining_cids && $this->cache) {
        $cache_results = $this->cache
            ->fetch(array_keys($remaining_cids)) ?: [];
        foreach ($cache_results as $cid => $cached) {
            $filepath = $remaining_cids[$cid];
            if ($cached['mtime'] == filemtime($filepath)) {
                $file_data[$cached['filepath']] = $cached['data'];
                static::$cached[$cid] = $cached;
            }
        }
    }
    return $file_data;
}