使用PHP确定用户可以处理FancyZoom（Javascript图像缩放器）

Question

I'm working on a small PHP-driven website that's so basic that I can't imagine a browser from any time in the 2000's, if not further back, would have any serious issues with it.

I added the FancyZoom Javascript image viewer, though, and it's the ONE part of my site that I can't bet my life on in terms of across-the-board compatibility, especially taking fragmented mobile browsers into account (for instance, I'm still using an iPhone 3GS, so I know luddites like me are out there).

I know browser/feature detection is discussed here often, but I've got a relatively specific request since I'm not an up-to-date web programmer. What specific features (or user agents, if the case may be) should I be detecting to determine whether to enable an image viewer like FancyZoom or simply leave the user with a direct image link?

I'd imagine that it should be possible to filter out a few cases where the image loader wouldn't work, without going so far as to use one of those uber-complex user agent parsers that require updates, etc. This is a really simple, specific detection problem.

Any ideas on how to boil this down to the simplest possible features to check for would be great. Thanks!

Answer 1

you could do something like this to weed out old browsers

$browser = $_SERVER['HTTP_USER_AGENT']; 

if(preg_match('/(?i)MSIE [1-6]/',$browser) && !preg_match('/Opera/i',$browser))
 {
$image = 'Non fancy zoom';

} else

{
$image = 'fancy zoom';
} 

I have not messed with the jquery plugin your using, so I do not know what browsers it is good for etc, but you can use the below to find their browser and just write rules...

$browser = $_SERVER['HTTP_USER_AGENT'];