Add Boolean Support

[s-belichenko]

Add processing of boolean variables. For example, I can write in .env:
APP_DEBUG=false
but this code return true in any case:
getenv('APP_DEBUG')
In the end, I have to write something like:
getenv('APP_DEBUG')=="true"

[jpuck]

related: #197

[GrahamCampbell]

This is something you can do by making your own env function, like laravel has done. Introducing this here just breaks the ability to have the string false.

[s-belichenko]

Introducing this here just breaks the ability to have the string false.

This is an unconvincing argument, in my opinion.

[fabswt]

Wouldn't it make sense to add an option for it?

[GrahamCampbell]

getenv only is allowed to return either a string or false on failure.

[GrahamCampbell]

Environment variables are strings.

[s-belichenko]

Environment variables are strings.

You are right:

getenv ( string $varname [, bool $local_only = FALSE ] ) : string

Message to all readers. This code will help make working with Boolean variables more enjoyable:

$dotenv->required('FOO')->isBoolean();

@GrahamCampbell It might be great to get a new method from the main library class that replaces the standard function get_env().

[cja-github]

Solution:

filter_var($_ENV['var'], FILTER_VALIDATE_BOOLEAN)

From https://stackoverflow.com/a/10645030

[vouza]

The downside of this solution is that you have to know the type of value before you access it. It will either return FALSE or TRUE - also if it is a number or a string or even null.

Instead I have written a function, that does return a safe value.
function __base_kit_env($val, $fallback = null) { if (function_exists('getenv')) { return filter_var($_ENV[$val], FILTER_VALIDATE_BOOLEAN) ? TRUE : (stripos($_ENV[$val], 'false') === 0 ? FALSE : ((int)$_ENV[$val] > 0 ? (int)$_ENV[$val] : $_ENV[$val])); } return $fallback; }