阿里云的短信接口，请求报错：InvalidRegionId can not find endpoint to access
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采纳
官方sdk配置
//产品名称:云通信流量服务API产品,开发者无需替换
$product = "Dysmsapi";
//产品域名,开发者无需替换
$domain = "dysmsapi.aliyuncs.com";
// TODO 此处需要替换成开发者自己的AK (https://ak-console.aliyun.com/)
$accessKeyId = "aa"; // AccessKeyId
$accessKeySecret = "aa"; // AccessKeySecret
// 暂时不支持多Region
$region = "cn-hangzhou";
// 服务结点
$endPointName = "cn-hangzhou";