PHP checking what browser

$_SERVER['HTTP_USER_AGENT'] 
hasil : 
Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A543 Safari/419.3

cek------------------------

<?php

	$user_agent = $_SERVER['HTTP_USER_AGENT']; 

	if (preg_match('/MSIE/i', $user_agent)) { 
	   echo "Internet Explorer";
	} else {
	   echo "Non-IE Browser";
	} 

?>

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ganti MSIE dengan web browser yg sesuai
list browser

Internet Explorer: MSIE
Mozilla Firefox: Firefox
Google Chrome: Chrome
Apple Safari: Safari
Opera: Opera
Netscape Navigator: Netscape
Flock: Flock
Lynx: Lynx