cấu hình động kết nối db

application/config/database.php

@@ -84,11 +84,34 @@ defined('BASEPATH') OR exit('No direct script access allowed');
 | The $query_builder variables lets you determine whether or not to load
 | the query builder class.
 */
-
-$active_group = 'default';
+$active_group = ($_SERVER['SERVER_NAME'] == 'localhost') ? 'local' : 'server';
 $query_builder = TRUE;
 
-$db['default'] = array(
+$db['local'] = array(
+	//'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
+	'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; ',
+	'hostname' => 'localhost',
+	'username' => 'root',
+	'password' => '',
+	'database' => 'vmusicchart',
+	'dbdriver' => 'pdo',
+	'dbprefix' => '',
+	'pconnect' => TRUE,
+	'db_debug' => TRUE,
+	'cache_on' => FALSE,
+	'cachedir' => '',
+	'char_set' => 'utf8',
+	'dbcollat' => 'utf8_general_ci',
+	'swap_pre' => '',
+	'autoinit' => TRUE,
+	'encrypt' => FALSE,
+	'compress' => FALSE,
+	'stricton' => FALSE,
+	'failover' => array(),
+	'save_queries' => TRUE
+);
+
+$db['server'] = array(
     //'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
     'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; ',
     'hostname' => 'localhost',

application/config/database.php.server

+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.2.4 or newer
+ *
+ * NOTICE OF LICENSE
+ *
+ * Licensed under the Academic Free License version 3.0
+ *
+ * This source file is subject to the Academic Free License (AFL 3.0) that is
+ * bundled with this package in the files license_afl.txt / license_afl.rst.
+ * It is also available through the world wide web at this URL:
+ * http://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to obtain it
+ * through the world wide web, please send an email to
+ * licensing@ellislab.com so we can send you a copy immediately.
+ *
+ * @package		CodeIgniter
+ * @author		EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
+ * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/*
+| -------------------------------------------------------------------
+| DATABASE CONNECTIVITY SETTINGS
+| -------------------------------------------------------------------
+| This file will contain the settings needed to access your database.
+|
+| For complete instructions please consult the 'Database Connection'
+| page of the User Guide.
+|
+| -------------------------------------------------------------------
+| EXPLANATION OF VARIABLES
+| -------------------------------------------------------------------
+|
+|	['dsn']      The full DSN string describe a connection to the database.
+|	['hostname'] The hostname of your database server.
+|	['username'] The username used to connect to the database
+|	['password'] The password used to connect to the database
+|	['database'] The name of the database you want to connect to
+|	['dbdriver'] The database driver. e.g.: mysqli.
+|			Currently supported:
+|				 cubrid, ibase, mssql, mysql, mysqli, oci8,
+|				 odbc, pdo, postgre, sqlite, sqlite3, sqlsrv
+|	['dbprefix'] You can add an optional prefix, which will be added
+|				 to the table name when using the  Query Builder class
+|	['pconnect'] TRUE/FALSE - Whether to use a persistent connection
+|	['db_debug'] TRUE/FALSE - Whether database errors should be displayed.
+|	['cache_on'] TRUE/FALSE - Enables/disables query caching
+|	['cachedir'] The path to the folder where cache files should be stored
+|	['char_set'] The character set used in communicating with the database
+|	['dbcollat'] The character collation used in communicating with the database
+|				 NOTE: For MySQL and MySQLi databases, this setting is only used
+| 				 as a backup if your server is running PHP < 5.2.3 or MySQL < 5.0.7
+|				 (and in table creation queries made with DB Forge).
+| 				 There is an incompatibility in PHP with mysql_real_escape_string() which
+| 				 can make your site vulnerable to SQL injection if you are using a
+| 				 multi-byte character set and are running versions lower than these.
+| 				 Sites using Latin-1 or UTF-8 database character set and collation are unaffected.
+|	['swap_pre'] A default table prefix that should be swapped with the dbprefix
+|	['autoinit'] Whether or not to automatically initialize the database.
+|	['encrypt']  Whether or not to use an encrypted connection.
+|	['compress'] Whether or not to use client compression (MySQL only)
+|	['stricton'] TRUE/FALSE - forces 'Strict Mode' connections
+|							- good for ensuring strict SQL while developing
+|	['failover'] array - A array with 0 or more data for connections if the main should fail.
+|	['save_queries'] TRUE/FALSE - Whether to "save" all executed queries.
+| 				NOTE: Disabling this will also effectively disable both
+| 				$this->db->last_query() and profiling of DB queries.
+| 				When you run a query, with this setting set to TRUE (default),
+| 				CodeIgniter will store the SQL statement for debugging purposes.
+| 				However, this may cause high memory usage, especially if you run
+| 				a lot of SQL queries ... disable this to avoid that problem.
+|
+| The $active_group variable lets you choose which connection group to
+| make active.  By default there is only one group (the 'default' group).
+|
+| The $query_builder variables lets you determine whether or not to load
+| the query builder class.
+*/
+
+$active_group = 'default';
+$query_builder = TRUE;
+
+$db['default'] = array(
+	//'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
+	'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; ',
+	'hostname' => 'localhost',
+	'username' => 'vmusic',
+	'password' => 'Vmusic@2019###',
+	'database' => 'vmusicchart',
+	'dbdriver' => 'pdo',
+	'dbprefix' => '',
+	'pconnect' => TRUE,
+	'db_debug' => TRUE,
+	'cache_on' => FALSE,
+	'cachedir' => '',
+	'char_set' => 'utf8',
+	'dbcollat' => 'utf8_general_ci',
+	'swap_pre' => '',
+	'autoinit' => TRUE,
+	'encrypt' => FALSE,
+	'compress' => FALSE,
+	'stricton' => FALSE,
+	'failover' => array(),
+	'save_queries' => TRUE
+);
+
+/* End of file database.php */
+/* Location: ./application/config/database.php */
\ No newline at end of file