request()
request( $accessKeyId, $accessKeySecret, $domain, $params) : boolean|\stdClass
生成签名并发起请求
Parameters
| $accessKeyId | string AccessKeyId (https://ak-console.aliyun.com/) | |
| $accessKeySecret | string AccessKeySecret | |
| $domain | string API接口所在域名 | |
| $params | array API具体参数 | 
Returns
boolean|\stdClass —返回API接口调用结果,当发生错误时返回false