mongodb php backup

mongoDBBackup.php

      /**
       *
       * @copyright     Copyright (c) 2018. Giacomo Tüfekci (https://www.tuefekci.de)
       * @github          https://github.com/tuefekci
       * @license         https://www.tuefekci.de/LICENSE.md
       *
       */

        // IMPORTANT: $this->filesystem needs to be adapted to use case! Also this is not intended for Production Use!
        // TODO: For productive use add Exception handling etc. depended on use case.

        $mongo = new MongoDB\Client(.....);

        // Compress Context
        $deflateContext = deflate_init(ZLIB_ENCODING_GZIP, ['level' => 9]);

        foreach ($mongo->listDatabases() as $databaseInfo) {

           // Todo: should probably checked for collection as well.
            if($databaseInfo['empty']) {
                continue;
            }

            $databaseName = (string )$databaseInfo['name'];

            foreach ($mongo->$databaseName->listCollections() as $collectionInfo) {

                $collectionName = (string )$collectionInfo['name'];

                // Get Data
                $data = $mongo->$databaseName->$collectionName->find();

                // Compress Data
                $dump = deflate_add($deflateContext, (string)json_encode(iterator_to_array($data)), \ZLIB_FINISH);

                // INFO: for decompress use gzdecode($dump);
                $this->filesystem->put('backup/'.date("Y-m-d").'/'.$databaseName."/".$collectionName.'_'.date("H:i:s").'.gtbm', $dump, ['visibility' => 'private']);
            }

        }