php based os detection script?

[atarijake]

I was wondering if anybody has had any experience with getting an os detection script to dish out a css file specific for either a pc or a mac? I'm trying to deal with font size inconsistencies between the platforms and I'm fed up with the whole thing, anybody have any ideas? thanks!

[coopster]

You could always check to see if the user agent is being offered by checking the existence and/or value of the associated superglobal of the same name,

$_SERVER['HTTP_USER_AGENT']

.