Can we use ENV variables in templates to do conditionals?

In order to add ENV variables to your templates you’ll first need to add them to your .env.php file (this file should sit next to your system directory):

# .env.php

ENV=production

Once you’ve defined your variables you need to add them to ExpressionEngine’s config:

// config.php

$global = [];

// Add your variables here
$global['global:env'] = $_ENV['ENV'];

global $assign_to_config;

if (! isset($assign_to_config['global_vars'])) {
    $assign_to_config['global_vars'] = [];
}

You should now be able to access your global variables in your templates:

{!-- Template --}
{global:env}

Great sharing, amazing, thank you so much.