laravel database connection returns undefined index error

Question

I am developing a project using laravel 4 framework. In my database.php file I get the following error:

  Undefined index: driver 

And my connection is as following:

    $connections = array(
            'mysql' => array(
                'read' => array(
                    'host'      => 'localhost',
                    'driver'    => 'mysql',
                    'database'  => 'app_system',
                    'username'  => 'root',
                    'password'  => 'root',
                    'charset'   => 'utf8',
                    'collation' => 'utf8_unicode_ci',
                    'prefix'    => '',
                ),
                'write' => array(
                    'host'      => 'localhost',
                    'driver'    => 'mysql',
                    'database'  => 'app_system',
                    'username'  => 'root',
                    'password'  => 'root',
                    'charset'   => 'utf8',
                    'collation' => 'utf8_unicode_ci',
                    'prefix'    => '',
                ),
            ),

            'mysql2' => array(
                'read' => array(
                    'host'  => 'localhost',
                    'driver'    => 'mysql',
                    'database'  => 'app_userdata',
                    'username'  => 'root',
                    'password'  => 'root',
                    'charset'   => 'utf8',
                    'collation' => 'utf8_unicode_ci',
                    'prefix'    => '',                      
                ),
                'write' => array(
                    'host'  => 'localhost',
                    'driver'    => 'mysql',
                    'database'  => 'app_userdata',
                    'username'  => 'root',
                    'password'  => 'root',
                    'charset'   => 'utf8',
                    'collation' => 'utf8_unicode_ci',
                    'prefix'    => '',                      
                ),
            )
        );

I am also using environments in order to set different mysql connections. What is wrong with the code?

Solution 1

In my case it was because I deleted

'default' => 'mysql',

by mistake from app/config/database.php.

Solution 2

Moving the 'driver' key up a level should fix the issue.

$connections = array(
    'mysql' => array(
        'read' => array(
            'host'      => 'localhost',
            'database'  => 'app_system',
            'username'  => 'root',
            'password'  => 'root',
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
        ),
        'write' => array(
            'host'      => 'localhost',
            'database'  => 'app_system',
            'username'  => 'root',
            'password'  => 'root',
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
        ),
        'driver' => 'mysql'
    ),

Most of the other params that are shared can me moved as well

$connections = array(
    'mysql' => array(
        'read' => array(
            'host'      => 'localhost',
        ),
        'write' => array(
            'host'      => 'localhost',
        ),
        'driver'    => 'mysql',
        'database'  => 'app_system',
        'username'  => 'root',
        'password'  => 'root',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
    ),

Solution 3

This happens to me because I deleted

'default' =>env('DB_CONNECTION', 'mysql'),

From app/config/database.php. It's necesary have a default connection

Solution 4

Go to root directory .env This values are taken first.

View more solutions

Comments

[Onur]

I did it but it does not work. I also updated laravel to 4.1 and still get the error.

[EspadaV8]

Are you still getting the same error? I copy/pasted that code from a working L4.1 site that I've been working on (just changing the values). You will need to make the changes to the mysql2 section as well (although I would initially try with just 1 connection section for debugging).