<?php
$useragent = $_SERVER[‘HTTP_USER_AGENT’]);

if (preg_match(‘|MSIE ([0-9].[0-9]{1,2})|’,$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = ‘IE’;
} elseif (preg_match( ‘|Opera ([0-9].[0-9]{1,2})|’,$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = ‘Opera’;
} elseif(preg_match(‘|Firefox/([0-9\.]+)|’,$useragent,$matched)) {
        $browser_version=$matched[1];
        $browser = ‘Firefox’;
} elseif(preg_match(‘|Safari/([0-9\.]+)|’,$useragent,$matched)) {
        $browser_version=$matched[1];
        $browser = ‘Safari’;
} else {
        // browser not recognized!
    $browser_version = 0;
    $browser= ‘other’;
}

print “browser: $browser $browser_version”;
?>