CI 框架自定义数据库连接配置

?phpclass My_model extends CI_Model{public function __construct(){parent::__construct();$db_conn['hostname'] = localhost;$db_conn['username'] = root;$db_conn['password'] = nagiosxi;$db_conn['database'] = web;$db_conn['dbdriver'] = mysql;$d

<?php class My_model extends CI_Model
	{
		public function __construct()
		{
			parent::__construct();
			$db_conn['hostname'] = "localhost";
			$db_conn['username'] = "root";
			$db_conn['password'] = "nagiosxi";
			$db_conn['database'] = "web";
			$db_conn['dbdriver'] = "mysql";
			$db_conn['dbprefix'] = "";
			$db_conn['pconnect'] = FALSE;
			$db_conn['db_debug'] = TRUE;
			$db_conn['port'] = 3306;
			$this->load->database($db_conn); 
			//从此处提交配置参数，可以自定义数据库连接，可以有多个数据库的连接，不依靠config项里的单一数据库配置。
			//另一处自定义配置数据库连接参数的地方是在调用模块的地方
			//$this->load->mode('My_model', '别名',$db_conn); //别名可以无
		}
	}
?>

也可以在./config/database.php 里定义数据库连接数组，在调用$this->load->database('组名');

例：

./config/database.php

   $config['my']['hostname'] = 'localhost';

   $config['my']['username'] = 'root';

调用：

 $this->load->database('my');

http://codeigniter.org.cn/user_guide/database/connecting.html 这是说明地址