How to add an age verification file?

[total21]

I would like to be able to add an age verification file, based on php, something like enter.php. I would like to add it to places like this:

domain.com/enter.php
domain.com/sunny-leone/enter.php

or any other elements of the url. What would be the best way to do it, and would I need any rewrite rules?

Thanks.

[admin]

Just add a regular file and that's ok.

No need to add rewrites or make it complicated in any way.

[total21]

Based on the answer, the best way to go is to upload enter.php file to the root of the domain... Is this correct. And with this, domain.com/enter.php will work, but what would I do with pages like domain.com/model-name/enter.php. They will be already based on a rewrite rule, based on the answer to one of the previous questions. So, would I need to create a new rewrite rule for this too?

So, in general

a) upload enter.php to the root of the domain
b) work on rewrite rules

Would this be correct?

[admin]

Yes, if you'd like to have that enter.php for every model then to add a rewrite rule would be the best idea.