Codeigniter : How to join 2 tables in databases from 2 different connections -

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i made 2 database connections in database.php, 1 reading localhost machine , 1 writing "insert" online database.

but ran problem when wanted join 2 tables "answers" in localhost database , "user" in online database.

    function get_users() {     $write_db   = $this->load->database('default', true); /* database conection localhost db */     $read_db    = $this->load->database('read', true); /* database conection online db */      $read_db->select('*');     $read_db->from('ibitstore.user');     $write_db->join('english.answers','ibitstore.user.user_id = english.answers.user_id');     $query = $read_db->get();      if($query->num_rows() > 0)         return $query->result_array();      return array(); }

when use $write_db join clause

  $write_db->join('english.answers','ibitstore.user.user_id = english.answers.user_id');

data retrieved online database not localhost database, ignored join tried use:

$read_db->join('english.answers','ibitstore.user.user_id = english.answers.user_id');

then got sql error. looks thought "answers" table on online db:

a database error occurred

error number: 1142

select command denied user 'user'@'49.32.197.240' table 'answers'

select * (`ibitstore`.`user`)   join `english`.`answers`     on `ibitstore`.`user`.`user_id` = `english`.`answers`.`user_id`

filename: c:\xampp\htdocs\english\system\database\db_driver.php

line number: 330

please :(

you have 1 connection database @ time. you'd have run query on 1 database, run query on second database , manipulate results of both within php.


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