$path_to_zip = '/some-local-path/testfile.zip';

$archiver = archiver_get_archiver($path_to_zip);

$files = $archiver->listContents();

$extract_location = '/some-extract-location/';

 if (file_exists($extract_location)) {
      file_unmanaged_delete_recursive($extract_location);
 }

$archiver->extract($extract_location);