đổi charset kết nối db

application/config/database.php

@@ -88,8 +88,7 @@ $active_group = ($_SERVER['SERVER_NAME'] == 'localhost') ? 'local' : 'server';
 $query_builder = TRUE;
 
 $db['local'] = array(
-	//'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
-	'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; ',
+	'dsn'	   => 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
 	'hostname' => 'localhost',
 	'username' => 'root',
 	'password' => '',
@@ -112,8 +111,7 @@ $db['local'] = array(
 );
 
 $db['server'] = array(
-    //'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
-    'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; ',
+    'dsn'	=> 'mysql:host=localhost; dbname=vmusicchart; charset=utf8;',
     'hostname' => 'localhost',
     'username' => 'vmusic',
     'password' => 'Vmusic@2019###',