How do I get the browser version? I have done the browser detection part but every browser have different algorithm of its version release and its hard to get it. I already have looked in PHP's manual about get-browser function but every script seems out of my brain.
You can get it easily with get_browser()
<?php
$browser = get_browser();
$version = $browser->version;
Your only chance is to grab the User-Agent from the $_SERVER array. And there is no rule that forces a browser to include its version.
A google search for 'php browser version detection' return get_browser() as the first result. Please search before posting.
I have found PPK's JavaScript-based browser detection code to be very reliable.
来源：https://stackoverflow.com/questions/7967008/determine-browsers-version