A simple PHP Program - Get browser name and version

If you would like to get the browser name and version along with its running platform a simple PHP program would look like the below one:

function getBrowser()
{
$u_agent = $_SERVER['HTTP_USER_AGENT'];
$bname = 'Unknown';
$platform = 'Unknown';
$version= "";

//First get the platform
if (preg_match('/linux/i', $u_agent)) {
$platform = 'Linux';
}
elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {
$platform = 'Mac';
}
elseif (preg_match('/windows|win32/i', $u_agent)) {
$platform = 'Windows';
}

// Next get the name of the useragent yes seperately and for good reason
if(preg_match('/MSIE/i',$u_agent) && !preg_match('/Opera/i',$u_agent))
{
$bname = 'Internet Explorer';
$ub = "MSIE";
}
elseif(preg_match('/Firefox/i',$u_agent))
{
$bname = 'Mozilla Firefox';
$ub = "Firefox";
}
elseif(preg_match('/Chrome/i',$u_agent))
{
$bname = 'Google Chrome';
$ub = "Chrome";
}
elseif(preg_match('/Safari/i',$u_agent))
{
$bname = 'Apple Safari';
$ub = "Safari";
}
elseif(preg_match('/Opera/i',$u_agent))
{
$bname = 'Opera';
$ub = "Opera";
}
elseif(preg_match('/Netscape/i',$u_agent))
{
$bname = 'Netscape';
$ub = "Netscape";
}

// finally get the correct version number
$known = array('Version', $ub, 'other');
$pattern = '#(?' . join('|', $known) .
')[/ ]+(?[0-9.|a-zA-Z.]*)#';
if (!preg_match_all($pattern, $u_agent, $matches)) {
// no matching number just continue
}

// see how many we have
$i = count($matches['browser']);
if ($i != 1) {
//we will have two since we are not using 'other' argument yet
//see if version is before or after the name
if (strripos($u_agent,"Version") < strripos($u_agent,$ub)){
$version= $matches['version'][0];
}
else {
$version= $matches['version'][1];
}
}
else {
$version= $matches['version'][0];
}

// check if we have a number
if ($version==null || $version=="") {$version="?";}

return array(
'userAgent' => $u_agent,
'name' => $bname,
'version' => $version,
'platform' => $platform,
'pattern' => $pattern
);
}

// now call the function and try it
$ua=getBrowser();
$yourbrowser= "Your browser: " . $ua['name'] . " " . $ua['version'] . " on " .$ua['platform']; /*. " reports:
" . $ua['userAgent'];*/
print_r($yourbrowser);
?>

All you have to do as:

1. Create a PHP file with any of your text editor with the extension .php
2. Preview this page in your web browser and it will show you the web browser name version and its platform.

This program can be further modified and developed. Any suggestions and recommendations are welcome.

Thanks for visiting my blog.