To comment configuration inside the .env file you can make use of the "#" hashtags character. Since Laravel is using the vlucas/phpdotenv package to parse .env file, based on the documentation it's using the "#" character.
# This is a comment VAR="value here" # comment here is ignroed VAR2=value # comment here is ignored
The config above will output the code below.
<?php
env('VAR'); // value here
env('VAR2'); // valueTo add "#" as a value you need to wrap it with double-quote.
VAR_HERE="#hashtags"
The output will be as follows
<?php
env('VAR_HERE'); // #hashtags
