Get Values of Multidimensional array inside of another array

Question

Hi i am having this structure:

$GLOBALS['config'] = array(
            'mysql' => array(
                    'host' => 'localhost',
                    'username' => 'root',
                    'password' => 'root',
                    'dbname' => 'database'
                ),
            'session' => array(
                    'session_name' => 'user'
                ),
            'remember' => array(
                    'cookie_name' => 'hash',
                    'cookie_expiry' => 604800
                ),
            'folder' => array(
                    'root' => 'backend',
                    'header' => 'head',
                    'views' => 'views'
                ),
            'database' => array(
                    'names' => 'utf8mb4',
                    'charset' => 'utf8mb4',
                    'collation' => 'utf8mb4_general_ci',
                    'driver' => 'pdo'
                ),
            'url' => array(
                'base_url' => 'http://www.example.com/backend/',
                'document_root' => $_SERVER['DOCUMENT_ROOT'] . "/backend"
                ),
            'languages' => array(
                    'english' => 'en',
                    'german' => 'de',
                    'greek' => 'gr'
                ),
            'headers' => array(
                    '404' => 'HTTP/1.0 404 Not Found',
                    '401' => 'HTTP/1.0 401 Unauthorized',
                    '500' => 'HTTP/1.0 500 Internal Server Error',
                    '403' => 'HTTP/1.0 403 Forbidden'
                ),
            'title' => array(
                    'login' => 'Admin Dashboard',
                    'register' => 'Admin Dashboard | User Registration',
                )
        );

and i want in the url/base_url to be like this

'base_url' => 'http://www.example.com/'.$GLOBALS['config']['folder']['root'].'/'

so if i change folder i only have to change the name in only place, but i get a Syntax error like:

Notice: Undefined index: config in C:\xampp-php56\htdocs\backend\core\init.php on line 31

Is possible what i am trying to do? and if possible how?

You can't reference an array's index within its own array definition — billyonecan
– billyonecan, Commented Jun 9, 2016 at 11:55
any idea how can i reference to the folder array within this url array? — BRG
– BRG, Commented Jun 9, 2016 at 11:56

jszobody · Accepted Answer · 2016-06-09 12:08:57Z

2

You can't access another array index while you're still defining the array. Your statement defining the array hasn't completed yet, the array isn't available for access until the initial statement is finished.

You need to setup your array as much as you can first, and then go back and add the array elements that reference other array indexes.

So first just create your big array like you're doing, without the base_url.

$GLOBALS['config'] = array(
    ...
);

Now go back and add the url/base_url, you can now access the array index of config.

$GLOBALS['config']['url']['base_url'] = 'http://www.example.com/'.$GLOBALS['config']['folder']['root'].'/';

Example: https://3v4l.org/M7itf

edited Jun 9, 2016 at 12:08

answered Jun 9, 2016 at 11:57

jszobody

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2 Comments

jszobody Over a year ago

@BRG I don't think you understand. You can't access an array index while you're in the middle of defining the array. You can't do what you're trying to do. I'm showing you the proper way to accomplish this, even if it's not what you wanted.

jszobody Over a year ago

@BRG see the example link I just included

GONG · Accepted Answer · 2016-06-09 11:51:15Z

1

Missed dot 'base_url' => 'http://www.example.com/'.$GLOBALS['config']['folder']['root'].'/'

answered Jun 9, 2016 at 11:51

GONG

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1 Comment

BRG Over a year ago

and now it says undefined index config...i guess it cannot see that the folder is named config

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