object(mysqli_stmt)#3 (10) {
  ["affected_rows"]=>
  int(-1)
  ["insert_id"]=>
  int(0)
  ["num_rows"]=>
  int(0)
  ["param_count"]=>
  int(8)
  ["field_count"]=>
  int(21)
  ["errno"]=>
  int(1)
  ["error"]=>
  string(66) "Can't create/write to file '/var/tmp/#sql_9fa_5.MAI' (Errcode: 28)"
  ["error_list"]=>
  array(1) {
    [0]=>
    array(3) {
      ["errno"]=>
      int(1)
      ["sqlstate"]=>
      string(5) "HY000"
      ["error"]=>
      string(66) "Can't create/write to file '/var/tmp/#sql_9fa_5.MAI' (Errcode: 28)"
    }
  }
  ["sqlstate"]=>
  string(5) "HY000"
  ["id"]=>
  int(1)
}