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<?php
/*
This function is a browser sniffer that returns a string-indexed array.
The call:
$browser = SniffBrowser();
will return the following:
$browser['type'] = Netscape, Explorer, Opera, Amaya, Unknown
$browser['version'] = version number (float)
$browser['platform'] = Windows, Mac, Other
$browser['css'] = CSS version
$browser['dom'] = DOM type: NS, IE, W3C, 0
Sourced from http://www.eit.ihk-edu.dk/instruct/php-sniffer.php?e=0,7,22#0
I am not sure of the copyright details for this function...
*/
function SniffBrowser()
{
global $HTTP_USER_AGENT;
$b = $HTTP_USER_AGENT; $vers = 0.0;
// detect browser brand and version number
if (eregi('Opera[ \/]([0-9\.]+)' , $b, $a)) {
$type = 'Opera';}
elseif (eregi('Netscape[[:alnum:]]*[ \/]([0-9\.]+)', $b, $a)) {
$type = 'Netscape';}
elseif (eregi('MSIE[ \/]([0-9\.]+)', $b, $a)) {
$type = 'Explorer';}
elseif (eregi('Mozilla[ \/]([0-9\.]+)' , $b, $a)) {
if (eregi('compatible' , $b)) {
$type = 'Unknown';}
else {
$type = 'Netscape';}}
elseif (eregi('([[:alnum:]]+)[ \/v]*([0-9\.]+)' , $b, $a)) {
$type = $a[1]; $vers = $a[2];}
else {
$type = 'Unknown';}
if (!$vers) $vers = $a[1];
$browser['type'] = $type;
$browser['version'] = $vers;
// detect platform
if (eregi('Win',$b)) $browser['platform'] = 'Windows';
elseif (eregi('Mac',$b)) $browser['platform'] = 'Mac';
else $browser['platform'] = 'Other';
// find CSS version
// note: it is unknown which future versions will support CSS2
if ($type == 'Netscape' && $vers >= 4 ||
$type == 'Explorer' && $vers >= 3 ||
$type == 'Opera' && $vers >= 3) {
$browser['css'] = 1;
if ($type == 'Netscape' && $vers >= 5 ||
$type == 'Explorer' && $vers >= 6 ||
$type == 'Opera' && $vers >= 4) {
$browser['css'] = 2;}}
// detect DOM version
$browser['dom'] = '0';
if ($type == 'Explorer' && $vers >= 4 && $browser['platform'] == 'Windows') {
// note: it is unknown which DOM model future versions of Explorer will use
$browser['dom'] = 'IE';}
elseif ($type == 'Opera' && $vers >= 5) {
$browser['dom'] = 'W3C';}
elseif ($type == 'Netscape') {
if ($vers >= 5) $browser['dom'] = 'W3C';
elseif ($vers >= 4) $browser['dom'] = 'NS';}
// return array of answers
return $browser;
}
?>
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