How to determine if a person has entered the site from a mobile device or from a PC using PHP?

Question

PHP

I remember there was a simple and convenient script in PHP, which made it possible to determine whether a person came to the site from a mobile device. Prompt, good scripts. It would be wonderful if the type of mobile platform (bucket, iPhone or Windows) was also determined.

Answer 1

Compare $_SERVER['HTTP_USER_AGENT'].

Answer 2

It is pointless.
Because now many devices on mobile OS have a larger screen and more powerful.
It is necessary to check the possibilities, and only on JS.
Even from jQuery sawed out such functionality.

Answer 3

Google analytics

Answer 4

For example https://packagist.org/packages/mobiledetect/mobile...