fetch($url, $bucket, $key); echo "=====> fetch $url to bucket: $bucket key: $key\n"; if ($err !== null) { var_dump($err); } else { print_r($ret); } //---------------------------------------- demo2 ---------------------------------------- // 不指定 key 时,以文件内容的 hash 作为文件名 $key = null; list($ret, $err) = $bucketManager->fetch($url, $bucket, $key); echo "=====> fetch $url to bucket: $bucket key: $(etag)\n"; if ($err !== null) { var_dump($err); } else { print_r($ret); }