Codeigniter-如何连接ORACLE，MySQL和SQL Server？

Question

I have found many questions regarding connecting multiple databases like this Link which helps in connecting multiple databases of MYSQL. In my case i need to connect to MySQL, ORACLE and SQL Server in same application.

Is it even possible using codeigniter Active Records?

I have googled a lot, but was unable to find any answer. It was a big surprise for me that no one faced similar problem.

Answer 1

I figured out the trick to do this in codeigniter, there are actually three very important things to keep in mind:

1. You should have the client installed on your Apache eg SQL SERVER client
2. Your "pconnect" should be set to FALSE in config/database.php file
3. To use your sqlserver(2nd Connection) you have to use below code in your constructor or function in which you want to use:

$this->sqlsrvr = $this->load->database('test', true);

Example Database.php File

You have to add multiple entries in your database.php file config folder, i am sharing my test database.php file below:

$active_group = 'default';
$active_record = TRUE;

$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'jawad';
$db['default']['dbdriver'] = 'mysqli';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = FALSE; 

$db['test']['hostname'] = "192.168.43.104";
$db['test']['username'] = "sa";
$db['test']['password'] = "password";
$db['test']['database'] = "jawad";
$db['test']['dbdriver'] = "sqlsrv";
$db['test']['dbprefix'] = "";
$db['test']['pconnect'] = FALSE;