fixed read replica config

fixed read replica config

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Readreplica {

	public function Readreplica(){
	
		$config['hostname'] = "myReadReplica.com";
		$config['username'] = "xxxxxx";
		$config['password'] = "xxxxxx";
		$config['database'] = "myDB";
		$config['dbdriver'] = "mysqli";

		$config['port'] = 3306;
		$config['dbprefix'] = '';
		$config['pconnect'] = TRUE;
		//$config['db_debug'] = TRUE;
                $config['db_debug'] = FALSE;
		$config['cache_on'] = FALSE;
		$config['cachedir'] = '';
		$config['char_set'] = 'utf8';
		$config['dbcollat'] = 'utf8_general_ci';
		$config['swap_pre'] = '';
		//$config['autoinit'] = TRUE;
                $config['autoinit'] = FALSE;
		$config['stricton'] = FALSE;
		$config['ssl_set'] = true; 
		$config['ssl_key'] = NULL;
		$config['ssl_cert'] = NULL;
		$config['ssl_ca'] =  realpath('./application/third_party/mysql-ssl-ca-cert.pem');
		$config['ssl_capath'] = NULL;
		$config['ssl_cipher'] = NULL;

		$CI =& get_instance();
		$rr=$CI->load->database($config, TRUE);
                $connected = $rr->initialize();
		if(!$connected){
			$config['hostname'] = "myMasterDatabase.com";
			$rr=$CI->load->database($config, TRUE);
		}
                else{
                  $rr=$CI->load->database($config, TRUE);
                }
		$this->CI =& get_instance();
		$this->load=$rr;
	}
}

how to use it ?

whats the ideia, why not use autoload ?

I found this through this thread: https://stackoverflow.com/questions/12483861/codeigniter-php-check-if-can-connect-to-database#:~:text=Connecting%20manually%20to%20a%20database%20in%20codeigniter%20using,and%20throw%20that%20error%20for%20you.%20%E2%80%93%20Iber%C3%AA

The issue is finding out whether the db connected successfully (say, during the install process for your app) as using autoinit will return a DB object with empty connection data and connected to nothing. By initializing it yourself, the initialize function will return false without the connection data or with bad creds.

you could also fire off an innocuous query and check the error object:
if (! $db->simpleQuery('SELECT example_fieldFROMexample_table')) { $error = $db->error(); // Has keys 'code' and 'message' }