DataSift\Storyplayer\ConfigLib\ConfigFinder::getListOfConfigFilesIn PHP Метод

    public function getListOfConfigFilesIn($directory, $pattern)
    {
        // does the directory exist?
        if (!is_dir($directory)) {
            return [];
        }
        // use the SPL to do the heavy lifting
        $dirIter = new RecursiveDirectoryIterator($directory);
        $recIter = new RecursiveIteratorIterator($dirIter);
        $regIter = new RegexIterator($recIter, '|^.+' . $pattern . '$|i', RegexIterator::GET_MATCH);
        // what happened?
        $filenames = [];
        foreach ($regIter as $match) {
            $filenames[] = $match[0];
        }
        // let's get the list into some semblance of order
        sort($filenames);
        // all done
        return $filenames;
    }

 /**
  * build a list of the config files in the $searchFolder
  *
  * @return array<string>
  */
 protected function findConfigFilenames($searchPattern)
 {
     // where are we looking?
     $searchFolders = $this->getSearchFolders();
     // our return value
     $filenames = [];
     foreach ($searchFolders as $searchFolder) {
         // do we have somewhere to look?
         if (null === $searchFolder || !is_dir($searchFolder)) {
             continue;
         }
         // build our list
         $configFinder = new ConfigFinder();
         $filenames = array_merge($filenames, $configFinder->getListOfConfigFilesIn($searchFolder, $searchPattern));
     }
     // all done
     return $filenames;
 }