How to know client side OS by PHP & Javascript?

Question

In PHP and Javascript by which function can we know what's end users operating system when an end user uses a site?

Answer 1

With an up-to-date browscap.ini, you can use the get_browser() php function.

For Javascript-based detection, check out this script from quirksmode.org

Answer 2

Pretty elegant way to do this by javascript is here.

Answer 3

In javascript:

navigator.platform gives you a general idea (win32 for example). navigator.userAgent can be parsed with this regex: /^[^\(]*\((.*)]\)/ to give you what's in the first set of parentheses. This typically is split up into more sub-sections, for example:

"Windows; U; Windows NT 6.0; en-US; rv:1.9.1.3pre"

Zytrax maintains a wonderful list of useragents.

in PHP:

browser.php parses the user agent into the OS, Browser, and Browser version:

• http://apptools.com/phptools/browser/source.php

Keep in mind though that no matter how you detect it, it can be faked.