How to change the configuration to immediately start with the dev version?

Question

symfony

By default, the page starts with app.php, and to enter the development mode, you need to go through app_dev.php.
How to make it default to app_dev.php.

Answer 1

I went through .htacces in the web folder and found a way.
# Rewrite all other queries to the front controller.
RewriteRule ^ %{ENV:BASE}/app.php [L]
Replace app.php and it will work.

Answer 2

in app.php:
Use session or config
if($config['env']=='dev'){
redirect(app_dev.php);
}
But why? any framework supports environments. Don't reinvent the wheel