php // 请求外部资源 // 参数:$url,字符串。$post,array。$httpheader,字符数组。...= hash_hmac("SHA256", $date, "TC3"....$secretKey, true);$secretService = hash_hmac("SHA256", $service, $secretDate, true);$secretSigning =...hash_hmac("SHA256", "tc3_request", $secretService, true);$signature = hash_hmac("SHA256", $stringToSign...$payload."'";// echo $curl.PHP_EOL;$he = ['Authorization: '.