<?php

        function browser_info($agent=null) {
            // Declare known browsers to look for
            $known = array('msie', 'firefox', 'safari', 'webkit', 'opera', 'netscape',
            'konqueror', 'gecko');

            // Clean up agent and build regex that matches phrases for known browsers
            // (e.g. "Firefox/2.0" or "MSIE 6.0" (This only matches the major and minor
            // version numbers. E.g. "2.0.0.6" is parsed as simply "2.0"
            $agent = strtolower($agent ? $agent : $_SERVER['HTTP_USER_AGENT']);
            $pattern = '#(?<browser>' . join('|', $known) .
            ')[/ ]+(?<version>[0-9]+(?:\.[0-9]+)?)#';

            // Find all phrases (or return empty array if none found)
            if (!preg_match_all($pattern, $agent, $matches)) return array();

            // Since some UAs have more than one phrase (e.g Firefox has a Gecko phrase,
            // Opera 7,8 have a MSIE phrase), use the last one found (the right-most one
            // in the UA). That's usually the most correct.
            $i = count($matches['browser'])-1;
            return array($matches['browser'][$i] => $matches['version'][$i],
            'browser' => $matches['browser'][$i],
            'version' => $matches['version'][$i]);                                  
        }
        //get browser info
        $ua = browser_info();

        //show what's returned
        if($ua['browser'] === "safari"){
            $var = 2;
        } elseif($ua['browser'] === "msie"){
            $var = 1;
        } elseif($ua['browser'] === "firefox"){
            $var = 1;
        }
    ?>

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