从配置文件中使用配置帮助器

Question

Is it possible to use the config() helper method within the config/app.php file its self??

I can't seem to get it to work. It just ignore it.

Example;

return [

    'extra' => 'test',

    'pages' => [
        'one',
        'two',
        'three',
        'demographics',
        'results',
        config('app.extra')
    ],

];

....from within the app.php file config('app.extra') does nothing.

Answer 1

Let's do a little experiment :D

Put three files in your config a.php , b.php and c.php and put these values:

a.php:

<?php
return ['name' => 'a'];

b.php

<?php
return [
  'name' => 'b', 
  'name_of_1' => config('a.name')
  'name_of_3' => config('c.name')
];

and c.php

<?php
return ['name' => 'c'];

Now from b.php you can access values of a.php but not of c.php

So...

dd(config(b.name))        //b
dd(config(b.name_of_1))   //a
dd(config(b.name_of_3))   //null

Conclusion You can only access values of previous config files from one config file. (And by previous it means alphabetically)