Are You iPhoned?

Checking if you are on an iPhone. If this text sticks, you might want to enable javascript.
To detect iPhone users on your sites, you can do so client-side or server-side.

Client-side (javascript):

	        if (navigator.userAgent.indexOf('iPhone') != -1) {
		   /* iPhone user */
		}

Server-side (example is PHP):

	        if (stristr($_SERVER['HTTP_USER_AGENT'],'iPhone')) {
		    /* iPhone user */
		}

For sites that use an MVC coding pattern where the programming logic code is separate from the template, the following example is useful:

	        if (stristr($_SERVER['HTTP_USER_AGENT'],'iPhone')) {
		    $template = 'home/iphone.html';
		}
		else {
		    $template = 'home/index.html';
		}

Thanks to Jose D. Lopez for the PHP tips.