public function log($save = null)
{
$chunks_folder = $this->get_import_location() . 'log' . DS;
$index_file = $chunks_folder . 'log.json';
if (!is_dir($chunks_folder)) {
mkdir_recursive($chunks_folder);
}
if (!is_file($index_file)) {
@touch($index_file);
}
if ($save !== null) {
file_put_contents($index_file, json_encode($save));
$save = null;
}
if ($save === null) {
$cont = json_decode(file_get_contents($index_file), true);
return $cont;
}
//return $chunks_folder;
}