錯誤：消息：無法連接到數據庫

Question

我在用

1- Windows Server 2012 R2

2- SQL Server 2014

3- Codeigniter 3.1

4- PHP 5.6

5-php_sqlsrv_56_ts.dll

我有時會收到此錯誤：

An uncaught Exception was encountered 
Type: RuntimeException
Message: Unable to connect to the database.
Filename: C:\wed\wed\system\database\DB_driver.php Line Number: 433
Backtrace:
File: C:\wed\wed\web\application\core\MY_Controller.php Line: 10
Function: __construct
File: C:\wed\wed\web\application\controllers\sanjeh.php Line: 12
Function: __construct
File: C:\wed\wed\web\index.php Line: 317
Function: require_once

Answer 1

轉到應用程序/配置/數據庫

https://codeigniter.com/user_guide/database/configuration.html

並設置

    'hostname' => 'localhost',
    'username' => 'root',
    'password' => '',
    'database' => 'database_name',
    'dbdriver' => 'mysqli',

Answer 2

對於SQLSRV驅動程序顯示的錯誤表明DLL從未加載。 您的php_info（）說什么？

另外，您是否安裝了SQL Server本機訪問客戶端（SNAC）10？ SQLSRV驅動程序需要它。

CodeIgniter的內置ODBC驅動程序，該驅動程序在表名周圍添加撇號。 我快速瀏覽了odbc_driver.php，更改了引用表的方式，從而解決了該問題

//Database Config file database.php in My case
$db['default']['hostname'] = "Driver={SQLServer};Server=127.0.0.1\YouSqlServerName;Database=DBName;Uid=username;Pwd=password;";
$db['default']['port'] = '1433';
$db['default']['username'] = 'username';
$db['default']['password'] = 'password';
$db['default']['database'] = 'DBName';
$db['default']['dbdriver'] = 'odbc';