Guzzle unarchive Gzip on the fly (without storing an archive on disk)

guzzle_gzip_unpack.php

<?php

// Requirements:
// - ext-zlib
// - guzzlehttp/guzzle

declare(strict_types=1);

use GuzzleHttp\Client;
use GuzzleHttp\RequestOptions;
use Psr\Http\Message\StreamInterface;

require 'vendor/autoload.php';

function gzip_inflate(string $file_path, StreamInterface $stream, int $chunk_size): \SplFileObject {
  \touch($file_path);

  $file_object = new \SplFileObject($file_path, 'wb');
  $zlib_resource = \inflate_init(\ZLIB_ENCODING_GZIP);

  while (!$stream->eof()) {
    $file_object->fwrite(\inflate_add($zlib_resource, $stream->read($chunk_size)));
  }

  $file_object->fflush();

  return $file_object;
}

$response = (new Client())->get('https://tgwf-green-domains-live.s3.nl-ams.scw.cloud/green_urls_2021-02-19.db.gz', [
  RequestOptions::STREAM => true,
  RequestOptions::TIMEOUT => 120,
]);

if (200 === $status_code = $response->getStatusCode()) {
  // Inflate a megabyte per chunk.
  gzip_inflate('./database.db', $response->getBody(), 1024 ** 2);
} else {
  echo \sprintf('Download failed (HTTP %d).', $status_code);
}