Michael Jacobsen

This PHP function gets the current browsers information and turn that into an array which contains the following information: User Agent, Browser Name, Browser Version, Platform and Pattern.

<?php
function getBrowser()
{
	$u_agent = isset($_SERVER['HTTP_USER_AGENT'])?$_SERVER['HTTP_USER_AGENT']:'';
	$bname = 'Unknown';
	$platform = 'Unknown';
	$version= $ub ="";

	//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';
		$ub = "Firefox";
	}
	elseif(preg_match('/Edge/i',$u_agent)){
		$bname = 'Microsoft Edge';
		$ub = "Edge";
	}
	elseif(preg_match('/Chrome/i',$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 = '#(?<browser>' . join('|', $known) .
	')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
	if (!preg_match_all($pattern, $u_agent, $matches)) {
		// we have 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 {
			$version= isset($matches['version'][1])?$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
	);
}

//Show User Agent
echo getBrowser('userAgent');

//Show Browser Name
echo getBrowser('name');

//Show Browser Version
echo getBrowser('version');

//Show Platform
echo getBrowser('platform');

//Show Pattern
echo getBrowser('pattern');
?>