How to reconfig database using controller in ci? - php

Question

is there a way to reconfig database using a controller in codeigniter?
let say i have this code in database config
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'db';
Then i want to change to this
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'admin';
$db['default']['password'] = 'password';
$db['default']['database'] = 'db_admin';
Using controller in codeigniter. Is this possible?

Answer 1

You can define multiple database in database.php in config folder like
//database 1 details
$db['db1']['hostname'] = 'localhost';
$db['db1']['username'] = 'root';
$db['db1']['password'] = '';
$db['db1']['database'] = 'db';
//database 2 details
$db['db2']['hostname'] = 'localhost';
$db['db2']['username'] = 'admin';
$db['db2']['password'] = 'password';
$db['db2']['database'] = 'db_admin';
And you can connect to required database as following in your scripts
if(condition){
$DB = $this->load->database('db1', TRUE);
}
else{
$DB = $this->load->database('db2', TRUE);
}
When you connect database like this, you have to use your object name $DB rather than $this
$DB->query();
$DB->result();
instead of
$this->db->query();
$this->db->result();
For more details

Answer 2

Yes you can do that. Inside your controller function specify the conditions and then add the following code:
$config['hostname'] = "localhost";
$config['username'] = "admin";
$config['password'] = "password";
$config['database'] = "db_admin";
$this->load->database($config);
Now you can access the new database config. Also disable caching as,
$db['default']['cache_on'] = FALSE;
in your database.php file inside config folder.
Hope it helps.

Answer 3

Looks like i have found the solution. Dont know is better or not. But its better than nothing.
I have tried over
$config['hostname'] = "localhost";
$config['username'] = "admin";
$config['password'] = "password";
$config['database'] = "db_admin";
$this->load->database($config);
and tried many ways.. but its always call the database from config folder
Then i found this basic php method for calling the database i desire
like this
$dbname = 'my_db';
$mysqli = new mysqli("localhost", "root", "", $dbname);
$result = $mysqli->query("query")`
$result->close();
I know how foolish i am, and how silly the answers.. but its better than nothing hahaha