object(mysqli)#2 (18) {
  ["affected_rows"]=>
  int(0)
  ["client_info"]=>
  string(14) "mysqlnd 8.1.27"
  ["client_version"]=>
  int(80127)
  ["connect_errno"]=>
  int(0)
  ["connect_error"]=>
  NULL
  ["errno"]=>
  int(0)
  ["error"]=>
  string(0) ""
  ["error_list"]=>
  array(0) {
  }
  ["field_count"]=>
  int(0)
  ["host_info"]=>
  string(56) "rm-wz986vej4389c9ce7no.mysql.rds.aliyuncs.com via TCP/IP"
  ["info"]=>
  NULL
  ["insert_id"]=>
  int(0)
  ["server_info"]=>
  string(6) "8.0.28"
  ["server_version"]=>
  int(80028)
  ["sqlstate"]=>
  string(5) "00000"
  ["protocol_version"]=>
  int(10)
  ["thread_id"]=>
  int(34480)
  ["warning_count"]=>
  int(0)
}