/**
 * 初始配置
 */
$config = [
    'access_key_id' => 'xxx',
    'access_key_secret' => 'xxx',
];
$region = EndpointConfig::getRegionIds();
$domain = EndpointConfig::getProductDomains();
$endpoint = new Endpoint('cn-hangzhou', $region, $domain);
EndpointProvider::setEndpoints([$endpoint]);

$profile = DefaultProfile::getProfile('cn-hangzhou', $config['access_key_id'], $config['access_key_secret']);

/**
 * 刷新缓存
 */
$request = new \Aliyun\Cdn\Request\RefreshObjectCachesRequest();
$request->setObjectType("File");
$request->setObjectPath("www.yourdomain.com/path/filename.ext");


$client   = new DefaultAcsClient($profile);
$response = $client->getAcsResponse($request);

var_dump($response);