use League\Flysystem\Filesystem;
use Overtrue\Flysystem\Qiniu\QiniuAdapter;

$accessKey = 'xxxxxx';
$secretKey = 'xxxxxx';
$bucket = 'test-bucket-name';
$domain = 'xxxx.bkt.clouddn.com'; // or with protocol: https://xxxx.bkt.clouddn.com

$adapter = new QiniuAdapter($accessKey, $secretKey, $bucket, $domain);

$flysystem = new League\Flysystem\Filesystem($adapter);

bool $flysystem->write('file.md', 'contents');

bool $flysystem->writeStream('file.md', fopen('path/to/your/local/file.jpg', 'r'));

bool $flysystem->update('file.md', 'new contents');

bool $flysystem->updateStream('file.md', fopen('path/to/your/local/file.jpg', 'r'));

bool $flysystem->rename('foo.md', 'bar.md');

bool $flysystem->copy('foo.md', 'foo2.md');

bool $flysystem->delete('file.md');

bool $flysystem->has('file.md');

string|false $flysystem->read('file.md');

array $flysystem->listContents();

array $flysystem->getMetadata('file.md');

int $flysystem->getSize('file.md');

string $flysystem->getAdapter()->getUrl('file.md'); 

string $flysystem->getMimetype('file.md');

int $flysystem->getTimestamp('file.md');