PHP CSS Browser Selector

css_browser_selector.php

<?php

/*
PHP CSS Browser Selector v0.0.2 (Update by Hari Karam Singh)
Bastian Allgeier (http://bastian-allgeier.de)
http://bastian-allgeier.de/css_browser_selector
License: http://creativecommons.org/licenses/by/2.5/
Credits: This is a php port from Rafael Lima's original Javascript CSS Browser Selector: http://rafael.adm.br/css_browser_selector
*/

function css_browser_selector($ua=null) {
        $ua = ($ua) ? strtolower($ua) : strtolower($_SERVER['HTTP_USER_AGENT']);        

        $g = 'gecko';
        $w = 'webkit';
        $s = 'safari';
        $m = 'mobile';
        $b = array();
        
        // browser
        if(!preg_match('/opera|webtv/i', $ua) && preg_match('/msie\s(\d)/', $ua, $array)) {
                $b[] = 'ie ie' . $array[1];
        }   else if(strstr($ua, 'firefox/2')) {
                $b[] = $g . ' ff2';     
        }   else if(strstr($ua, 'firefox/3.5')) {
                $b[] = $g . ' ff3 ff3_5';
        }   else if(strstr($ua, 'firefox/3')) {
                $b[] = $g . ' ff3';
        } else if(strstr($ua, 'gecko/')) {
                $b[] = $g;
        } else if(preg_match('/opera(\s|\/)(\d+)/', $ua, $array)) {
                $b[] = 'opera opera' . $array[2];
        } else if(strstr($ua, 'konqueror')) {
                $b[] = 'konqueror';
        } else if(strstr($ua, 'chrome')) {
                $b[] = $w . ' ' . $s . ' chrome';
        } else if(strstr($ua, 'iron')) {
                $b[] = $w . ' ' . $s . ' iron';
        } else if(strstr($ua, 'applewebkit/')) {
                $b[] = (preg_match('/version\/(\d+)/i', $ua, $array)) ? $w . ' ' . $s . ' ' . $s . $array[1] : $w . ' ' . $s;
        } else if(strstr($ua, 'mozilla/')) {
                $b[] = $g;
        }

        // platform             
        if(strstr($ua, 'j2me')) {
                $b[] = $m . ' j2me';
        } else if(strstr($ua, 'iphone')) {
                $b[] = $m . ' iphone';        
        } else if(strstr($ua, 'ipod')) {
                $b[] = $m . ' ipod';      
        } else if(strstr($ua, 'ipad')) {
                $b[] = $m . ' ipad';      
        } else if(strstr($ua, 'android')) {
                $b[] = $m . ' android';      
        } else if(strstr($ua, 'blackberry')) {
                $b[] = $m . ' blackberry';   
        } else if(strstr($ua, 'mac')) {
                $b[] = 'mac';       
        } else if(strstr($ua, 'darwin')) {
                $b[] = 'mac';       
        } else if(strstr($ua, 'webtv')) {
                $b[] = 'webtv';     
        } else if(strstr($ua, 'win')) {
                $b[] = 'win';       
        } else if(strstr($ua, 'freebsd')) {
                $b[] = 'freebsd';       
        } else if(strstr($ua, 'x11') || strstr($ua, 'linux')) {
                $b[] = 'linux';     
        }
                
        return join(' ', $b);
        
}

Tweaks from latest JS version. Adds ipad, blackberry, changes 'j2me' and makes "mobile" apply to all mobile platforms.