string(5) "<pre>"
array(7) {
  ["code"]=>
  int(0)
  ["msg"]=>
  string(42) "通道不存在，请检查是否未开启"
  ["sign_type"]=>
  string(3) "MD5"
  ["ins_id"]=>
  string(10) "M856437352"
  ["app_id"]=>
  string(16) "APP_896564793562"
  ["data"]=>
  array(0) {
  }
  ["sign"]=>
  string(32) "B5746006C721ABFF1650C26C3AB0ECC9"
}