From: robert <robert>
Date: Thu, 17 Mar 2005 20:09:36 +0000 (+0000)
Subject: modernize userAgent class, make it return additional info such as OS, platform, langu... 
X-Git-Url: https://git-public.kairo.at/?a=commitdiff_plain;h=bf78d3ed3249c9c7fdf38737f6c14f04b21b5330;p=php-utility-classes.git

modernize userAgent class, make it return additional info such as OS, platform, language, understang more rendering engines, better functions to check for them and their version
---

diff --git a/include/classes/useragent.php-class b/include/classes/useragent.php-class
index f5df93d..d1fd435 100755
--- a/include/classes/useragent.php-class
+++ b/include/classes/useragent.php-class
@@ -45,7 +45,7 @@ class userAgent {
   // var $uastring
   //   the plain User Agent string
   // var $brand
-  //   returns the User Agent brand name
+  //   the User Agent brand name
   // var $version
   //   the User Agent version
   // var $bot
@@ -55,6 +55,7 @@ class userAgent {
   //
   // function getBrand()
   //   returns the User Agent Brand Name
+  //
   // function getVersion()
   //   returns the User Agent version
   //
@@ -65,8 +66,39 @@ class userAgent {
   // function getUAString()
   //   returns the full User Agent string
   //
-  // function isbot()
+  // function getEngine()
+  //   returns a string telling the detected rendering engine, null if we can't detect
+  //     one of gecko|khtml|trident|tasman|nscp|presto|gzilla|gtkhtml|links|unkown
+  //
+  // function hasEngine($rnd_engine)
+  //   returns true if the given rendering engine was detected
+  //
+  // function getEngineVersion()
+  //   returns a the version number for the rendering engine
+  //     this may be the same as getVersion() for many engines, or null if we don't know
+  //
+  // function getOS()
+  //   returns a string telling the detected operating system, null if we can't detect
+  //     might be very verbose, uses no abbreviations for most names
+  //
+  // function getPlatform()
+  //   returns a string telling the detected OS platform, null if we can't detect
+  //     one of windows|linux|mac|solaris|unkown
+  //
+  // function getLanguage() {
+  //   returns a string telling the detected browser UI language, null if we can't detect
+  //     should be an ISO code
+  //
+  // function isBot()
   //   returns true if User Agent seems to be a bot
+  //
+  // *** functions that only return useable info for some agents ***
+  //
+  // function getGeckoDate()
+  //   returns the Gecko date for Gecko-based browsers, null for others
+  //
+  // *** functions for compat to older versions of this class ***
+  //
   // function isns()
   //   returns true if User Agent seems to be Netscape brand, false if not
   // function isns4()
@@ -81,74 +113,8 @@ class userAgent {
   //   returns true if User Agent seems to be a KHTML-based browser, false if not
 
   // collection of some known User Agent Strings:
-  // Mozilla/5.0 (compatible; Konqueror/3; Linux 2.4.18; X11; i686)
-  // Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.3b) Gecko/20030114
-  // Mozilla/4.0 (compatible; MSIE 5.0; Windows 95; DigExt)
-  // Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; Win 9x 4.90)
-  // Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
-  // Mozilla/4.75 [de] (Win98; U)
-  // Opera/5.12 (Windows 2000; U)  [de]
-  // Mozilla/5.0 (Windows; U; Win 9x 4.90; de-DE; m18) Gecko/20010131 Netscape6/6.01
-  // Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.0.1) Gecko/20020823 Netscape/7.0
-  // Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/51 (like Gecko) Safari/51
-  // Lynx/2.8.4rel.1 libwww-FM/2.14 SSL-MM/1.4.1 OpenSSL/0.9.6g
-  // Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-US; rv:1.0.1) Gecko/20021109 Chimera/0.6+
-  // Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7b) Gecko/20040302 Camino/0.7+
-  // Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.3a) Gecko/20021207 Phoenix/0.5
-  // Mozilla/5.0 Galeon/1.2.7 (X11; Linux i686; U;) Gecko/20021204
-  // Mozilla/4.0 (compatible; MSIE 5.0; Windows XP) Opera 6.05 [ja]
-  // Mozilla/4.0 (compatible; MSIE 5.12; Mac_PowerPC) OmniWeb/4.1.1-v424.6
-  // Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030516 Mozilla Firebird/0.6
-  // Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1
-  // Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7a) Gecko/20040216 Firefox/0.8.0+
-  // Python-urllib/1.15
-  // *** search bots: ***
-  // W3C_Validator/1.305.2.12 libwww-perl/5.64
-  // Scooter/3.3
-  // Spinne/2.0 med_AH
-  // Vagabondo/2.0 MT (webagent at wise-guys dot nl)
-  // TurnitinBot/1.5 ( ">http://www.turnitin.com/robot/crawlerinfo.html)
-  // FAST-WebCrawler/3.x Multimedia (mm dash crawler at fast dot no)
-  // Firefly/1.0 (compatible; Mozilla 4.0; MSIE 5.5)
-  // Googlebot/2.1 (+ ">http://www.googlebot.com/bot.html)
-  // Scrubby/2.2 ( ">http://www.scrubtheweb.com/)
-  // psbot/0.1 (+ ">http://www.picsearch.com/bot.html)
-  // NG/1.0
-  // URL_Spider_Pro/3.0 ( ">http://www.innerprise.net/usp-spider.asp)"
-  // Pompos/1.3 ">http://dir.com/pompos.html
-  // Szukacz/1.5 (robot; www.szukacz.pl/jakdzialarobot.html; info@szukacz.pl)
-  // ASPseek/1.2.10
-  // NPBot-1/2.0
-  // NetResearchServer/2.7(loopimprovements.com/robot.html)
-  // dloader(NaverRobot)/1.0
-  // Mozilla/4.0 compatible ZyBorg/1.0 Daily Refresh Beta-d03 (wn.zyborg@looksmart.net;
-  // Mozilla/2.0 (compatible; Ask Jeeves/Teoma)
-  // Mozilla/5.0 (Slurp/si; slurp@inktomi.com; ">http://www.inktomi.com/slurp.html)
-  // Mozilla/5.0 [en] (compatible; Gulper Web Bot 0.2.4 www.ecsl.cs.sunysb.edu/~maxim/cgi-bin/Link/GulperBot)
-  // Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; Girafabot; girafabot at girafa dot com;
-  // Mozilla/4.0 (efp@gmx.net)
-  // Mozilla/4.5 (compatible; HTTrack 3.0x; Windows 98)
-  // PingALink Monitoring Services 1.0 (http://www.pingalink.com)
-  // IlTrovatore-Setaccio (+ ">http://www.iltrovatore.it)
-  // Mercator-2.0
-  // appie 1.1 (www.walhello.com)
-  // larbin_2.6.2 (larbin2.6.2@unspecified.mail)
-  // OWR_Crawler 0.1
-  // search.ch V1.4.2 (spiderman@search.ch;
-  // WebFilter Robot 1.0
-  // Openfind data gatherer, Openbot/3.0+(robot-response@openfind.com.tw;+
-  // LinkWalker
-  // Internet Explorer 5.5
-  // BaiDuSpider
-  // Mozilla/4.0 (compatible; B-l-i-t-z-B-O-T)
-  // B l i t z B O T @ t r i c u s . n e t (Mozilla compatible)
-  // sitecheck.internetseer.com (For more info see: ">http://sitecheck.internetseer.com)
-  // http://www.almaden.ibm.com/cs/crawler   [c01]
-  // ia_archiver
-  // Nutch
-  // Mozilla
-  // HeinrichderMiragoRobot
-  // dumbBot
+  // *** see testbed/ua_list_raw.txt ***
+  // *** see also http://www.pgts.com.au/pgtsj/pgtsj0208c.html ***
 
   var $uastring;
   var $brand;
@@ -167,220 +133,201 @@ class userAgent {
     }
 
     // get UA brand and version
-    $this->brand = "Unknown"; $this->version = 0;
-    if (ereg("([0-9a-zA-Z\.()-]+)/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = $regs[1]; // this is a reasonable default :)
-      $this->version = $regs[2]; // this is a reasonable default :)
-    }
-    if (ereg("Netscape6/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Netscape";
+    $this->brand = 'Unknown'; $this->version = null;
+    // find reasonable defaults
+    if (preg_match('|([0-9a-zA-Z\.()_ -]+)/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = trim($regs[1]);
+      $this->version = $regs[2];
+    }
+    elseif (preg_match('|^([a-zA-Z\._ -]+)[_ -][vV]?([0-9][0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = trim($regs[1]);
+      $this->version = $regs[2];
+    }
+    elseif (preg_match('|^([a-zA-Z\._ -]+)|', $this->uastring, $regs)) {
+      $this->brand = trim($regs[1]);
+      $this->version = null;
+    }
+    // search for any real and/or special UAs
+    if (preg_match('|Netscape6/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Netscape';
       $this->version = $regs[1];
     }
-    elseif (ereg("Netscape/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Netscape";
+    elseif (preg_match('|Netscape/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Netscape';
       $this->version = $regs[1];
     }
-    elseif (ereg("Chimera/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Chimera";
+    elseif (preg_match('|Chimera/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Chimera';
       $this->version = $regs[1];
     }
-    elseif (ereg("Camino/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Camino";
+    elseif (preg_match('|Camino/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Camino';
       $this->version = $regs[1];
     }
-    elseif (ereg("Phoenix/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Phoenix";
+    elseif (preg_match('|Phoenix/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Phoenix';
       $this->version = $regs[1];
     }
-    elseif (ereg("Mozilla Firebird/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Mozilla Firebird";
+    elseif (preg_match('|Mozilla Firebird/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Mozilla Firebird';
       $this->version = $regs[1];
     }
-    elseif (ereg("Firefox/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Firefox";
+    elseif (preg_match('|Firefox/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Firefox';
       $this->version = $regs[1];
     }
-    elseif (ereg("Galeon/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Galeon";
+    elseif (preg_match('|Galeon/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Galeon';
       $this->version = $regs[1];
     }
-    elseif (ereg("rv:([0-9a-zA-Z\.+]+)", $this->uastring, $regs) && strstr($this->uastring, "Mozilla/") && strstr($this->uastring, "Gecko/")) {
-      $this->brand = "Mozilla";
+    elseif (preg_match('|rv:([0-9a-zA-Z\.+]+)|', $this->uastring, $regs) && strstr($this->uastring, "Mozilla/") && strstr($this->uastring, "Gecko/")) {
+      $this->brand = 'Mozilla';
       $this->version = $regs[1];
     }
-    elseif (ereg("Opera[ /]([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Opera";
+    elseif (preg_match('|Opera[ /]([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Opera';
       $this->version = $regs[1];
     }
-    elseif (ereg("OmniWeb/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "OmniWeb";
+    elseif (preg_match('|OmniWeb/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'OmniWeb';
       $this->version = $regs[1];
     }
-    elseif (ereg("Konqueror/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Konqueror";
+    elseif (preg_match('|Konqueror/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Konqueror';
       $this->version = $regs[1];
     }
-    elseif (ereg("Safari/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Safari";
+    elseif (preg_match('|Safari/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Safari';
       $this->version = $regs[1];
     }
-    elseif (ereg("AppleWebKit/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "AppleWebKit";
+    elseif (preg_match('|AppleWebKit/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'AppleWebKit';
       $this->version = $regs[1];
     }
-    elseif (ereg("W3C_Validator/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "W3C_Validator";
+    elseif (preg_match('|MSFrontPage/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Microsoft FrontPage';
       $this->version = $regs[1];
-      $this->bot = true;
     }
-    elseif (ereg("ZyBorg/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "ZyBorg";
+    elseif (preg_match('|iCab[/ ]([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'iCab';
       $this->version = $regs[1];
-      $this->bot = true;
     }
-    elseif (ereg("Ask Jeeves/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Ask Jeeves";
+    elseif (preg_match('|IBrowse[/ ]([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'IBrowse';
       $this->version = $regs[1];
-      $this->bot = true;
     }
-    elseif (ereg("Slurp/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Slurp";
+    elseif (preg_match('|Configuration/CLDC-([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'CLDC';
       $this->version = $regs[1];
-      $this->bot = true;
     }
-    elseif (ereg("Openbot/([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Openbot";
+    elseif (preg_match('|ELinks \(([0-9a-zA-Z\.+]+);|', $this->uastring, $regs)) {
+      $this->brand = 'ELinks';
       $this->version = $regs[1];
-      $this->bot = true;
     }
-    elseif (ereg("Mercator-([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Mercator";
+    elseif (preg_match('|ZyBorg/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'ZyBorg';
       $this->version = $regs[1];
       $this->bot = true;
     }
-    elseif (ereg("appie ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "appie";
+    elseif (preg_match('|Googlebot/?([0-9a-zA-Z\.+]+)?|', $this->uastring, $regs)) {
+      $this->brand = 'Googlebot';
       $this->version = $regs[1];
       $this->bot = true;
     }
-    elseif (ereg("larbin_([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "larbin";
+    elseif (preg_match('|Ask Jeeves/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Ask Jeeves';
       $this->version = $regs[1];
       $this->bot = true;
     }
-    elseif (ereg("Gulper Web Bot ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Gulper Web Bot";
+    elseif (preg_match('|Slurp/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Slurp';
       $this->version = $regs[1];
       $this->bot = true;
     }
-    elseif (ereg("HTTrack ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "HTTrack";
+    elseif (preg_match('|Gulper Web Bot ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Gulper Web Bot';
       $this->version = $regs[1];
       $this->bot = true;
     }
-    elseif (ereg("OWR_Crawler ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "OWR_Crawler";
+    elseif (preg_match('|HTTrack ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'HTTrack';
       $this->version = $regs[1];
       $this->bot = true;
     }
-    elseif (ereg("search.ch ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "search.ch";
-      $this->version = $regs[1];
+    elseif (preg_match('|^Internet Explorer 5.5|', $this->uastring)) {
+      $this->brand = 'Unknown bot (IE5.5)';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("WebFilter Robot ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "WebFilter Robot";
-      $this->version = $regs[1];
+    elseif (preg_match('|^Mozilla[\s ]*$|', $this->uastring)) {
+      $this->brand = 'Unknown bot (Mozilla)';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("^LinkWalker", $this->uastring)) {
-      $this->brand = "LinkWalker";
-      $this->version = "";
+    elseif (preg_match('|http://www.almaden.ibm.com/cs/crawler|', $this->uastring)) {
+      $this->brand = 'almaden crawler';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("^Internet Explorer 5.5", $this->uastring)) {
-      $this->brand = "Unknown bot (IE5.5)";
-      $this->version = "";
+    elseif (preg_match('|B-l-i-t-z-B-O-T|', $this->uastring) || preg_match('|B l i t z B O T @ t r i c u s . n e t|', $this->uastring)) {
+      $this->brand = 'BlitzBOT';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("^Mozilla[\s ]*$", $this->uastring)) {
-      $this->brand = "Unknown bot (Mozilla)";
-      $this->version = "";
+    elseif (preg_match('|sitecheck.internetseer.com|', $this->uastring)) {
+      $this->brand = 'internetseer';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("^BaiDuSpider", $this->uastring)) {
-      $this->brand = "BaiDuSpider";
-      $this->version = "";
+    elseif (preg_match('|Girafabot|', $this->uastring)) {
+      $this->brand = 'Girafabot';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("^ia_archiver", $this->uastring)) {
-      $this->brand = "ia_archiver";
-      $this->version = "";
+    elseif (preg_match('|efp@gmx.net|', $this->uastring)) {
+      $this->brand = 'efp';
+      $this->version = null;
       $this->bot = true;
     }
-    elseif (ereg("^PingALink", $this->uastring)) {
-      $this->brand = "PingALink";
-      $this->version = "";
-      $this->bot = true;
+    elseif (preg_match('|^Firefly|', $this->uastring)) {
+      // comes here with correct value but would be detected as MSIE
     }
-    elseif (ereg("^IlTrovatore-Setaccio", $this->uastring)) {
-      $this->brand = "IlTrovatore-Setaccio";
-      $this->version = "";
-      $this->bot = true;
+    elseif (preg_match('|Avant Browser[^/]|', $this->uastring)) {
+      $this->brand = 'Avant Browser';
+      $this->version = null;
     }
-    elseif (ereg("^Nutch", $this->uastring)) {
-      $this->brand = "Nutch";
-      $this->version = "";
-      $this->bot = true;
-    }
-    elseif (ereg("^dumbBot", $this->uastring)) {
-      $this->brand = "dumbBot";
-      $this->version = "";
-      $this->bot = true;
-    }
-    elseif (ereg("http://www.almaden.ibm.com/cs/crawler", $this->uastring)) {
-      $this->brand = "almaden crawler";
-      $this->version = "";
-      $this->bot = true;
-    }
-    elseif (ereg("B-l-i-t-z-B-O-T", $this->uastring) || ereg("B l i t z B O T @ t r i c u s . n e t", $this->uastring)) {
-      $this->brand = "BlitzBOT";
-      $this->version = "";
-      $this->bot = true;
-    }
-    elseif (ereg("sitecheck.internetseer.com", $this->uastring)) {
-      $this->brand = "internetseer";
-      $this->version = "";
-      $this->bot = true;
+    elseif (preg_match('|Crazy Browser ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Crazy Browser';
+      $this->version = $regs[1];
     }
-    elseif (ereg("Girafabot", $this->uastring)) {
-      $this->brand = "Girafabot";
-      $this->version = "";
-      $this->bot = true;
+    elseif (preg_match('|AOL ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'AOL';
+      $this->version = $regs[1];
     }
-    elseif (ereg("efp@gmx.net", $this->uastring)) {
-      $this->brand = "efp";
-      $this->version = "";
-      $this->bot = true;
+    elseif (preg_match('|MSN ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'MSN';
+      $this->version = $regs[1];
     }
-    elseif (ereg("HeinrichderMiragoRobot", $this->uastring)) {
-      $this->brand = "HeinrichderMiragoRobot";
-      $this->version = "";
-      $this->bot = true;
+    elseif (preg_match('|MS FrontPage ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Microsoft FrontPage';
+      $this->version = $regs[1];
     }
-    elseif (ereg("MSIE ([0-9a-zA-Z\.+]+)", $this->uastring, $regs)) {
-      $this->brand = "Microsoft Internet Explorer";
+    elseif (preg_match('|MSIE ([0-9a-zA-Z\.+]+)|', $this->uastring, $regs)) {
+      $this->brand = 'Microsoft Internet Explorer';
       $this->version = $regs[1];
     }
-    elseif (ereg("Mozilla/([0-9a-zA-Z\.+]+)", $this->uastring, $regs) && !strstr($this->uastring, "compatible;") && !strstr($this->uastring, "Gecko/")) {
-      $this->brand = "Netscape";
+    elseif (preg_match('|Mozilla/([0-9a-zA-Z\.+]+)|', $this->uastring, $regs) && !strstr($this->uastring, "compatible;") && !strstr($this->uastring, "Gecko/")) {
+      $this->brand = 'Netscape';
       $this->version = $regs[1];
-      if (intval($this->version) == 4) { $this->brand .= " Communicator"; }
+      if (intval($this->version) == 4) { $this->brand .= ' Communicator'; }
     }
 
     $botArray = array('Scooter','Spinne','Vagabondo','TurnitinBot','FAST-WebCrawler','Firefly','Googlebot',
                       'Scrubby','psbot','NG','URL_Spider_Pro','Pompos','Szukacz','ASPseek','NPBot-1',
-                      'dloader(NaverRobot)','NetResearchServer','','','','','','','');
+                      'dloader(NaverRobot)','NetResearchServer','HeinrichderMiragoRobot','LinkWalker',
+                      'Openbot','W3C_Validator','ZyBorg','Ask Jeeves','dumbBot','BaiDuSpider','ia_archiver',
+                      'PingALink Monitoring Services','IlTrovatore-Setaccio','Nutch','Mercator','OWR_Crawler',
+                      'search.ch','WebFilter Robot','appie','larbin','','','','','','','','');
 
     if (in_array($this->brand, $botArray)) {
       $this->bot = true;
@@ -407,66 +354,229 @@ class userAgent {
   }
 
   function getUAString() { return $this->uastring; }
-  function isbot() { return $this->bot; }
 
-  function isns() {
-    if (!isset($this->uadata['is_ns'])) {
-      $this->uadata['is_ns'] = false;
-      if (strstr($this->brand, 'Netscape')) {
-        $this->uadata['is_ns'] = true;
+  function getEngine() {
+    // return gecko|khtml|trident|tasman|nscp|presto|gzilla|gtkhtml|links|unkown
+    if (!isset($this->uadata['engine'])) {
+      $this->uadata['engine'] = 'unkown';
+      $this->uadata['geckodate'] = null;
+      if (preg_match('|Gecko/([0-9]+)|', $this->uastring, $regs)) {
+        $this->uadata['engine'] = 'gecko';
+        $this->uadata['geckodate'] = $regs[1];
+      }
+      elseif ((strpos($this->brand, 'Internet Explorer') !== false) ||  (strpos($this->brand, 'FrontPage') !== false)) {
+        if (($this->uadata['platform'] == 'mac') && (intval($this->version) >= 5)) {
+          $this->uadata['engine'] = 'tasman';
+        }
+        else {
+          $this->uadata['engine'] = 'trident';
+        }
+      }
+      elseif ((strpos($this->brand, 'Konqueror') !== false) || (strpos($this->brand, 'Safari') !== false) || (strpos($this->brand, 'AppleWebKit') !== false) || (strpos($this->brand, 'OmniWeb') !== false)) {
+        $this->uadata['engine'] = 'khtml';
+      }
+      elseif ((strpos($this->brand, 'Netscape') !== false) && (intval($this->version) <= 4)) {
+        $this->uadata['engine'] = 'nscp';
+      }
+      elseif (strpos($this->brand, 'Opera') !== false) {
+        $this->uadata['engine'] = 'presto';
+      }
+      elseif (strpos($this->brand, 'Dillo') !== false) {
+        $this->uadata['engine'] = 'gzilla';
+      }
+      elseif ((strpos($this->brand, 'ELinks') !== false) || (strpos($this->brand, 'Links') !== false)) {
+        $this->uadata['engine'] = 'links';
+      }
+      elseif ((strpos($this->brand, 'Avant') !== false) || (strpos($this->brand, 'Crazy Browser') !== false) || (strpos($this->brand, 'AOL') !== false) || (strpos($this->brand, 'MSN') !== false)) {
+        $this->uadata['engine'] = 'trident';
+      }
+      elseif (strpos($this->brand, 'Galeon') !== false) {
+        $this->uadata['engine'] = 'gecko';
       }
     }
-  return $this->uadata['is_ns'];
+  return $this->uadata['engine'];
   }
 
-  function isns4() {
-    if (!isset($this->uadata['is_ns4'])) {
-      $this->uadata['is_ns4'] = false;
-      if (strstr($this->brand, 'Netscape') && (intval($this->version) == 4)) {
-        $this->uadata['is_ns4'] = true;
-      }
+  function hasEngine($rnd_engine) { return ($this->getEngine() == $rnd_engine); }
+
+  function getEngineVersion() {
+    if (!isset($this->uadata['eng_version'])) {
+      $this->uadata['eng_version'] = null;
+      // getOS() should get the date for us
+      $this->getOS();
     }
-  return $this->uadata['is_ns4'];
+  return $this->uadata['eng_version'];
   }
 
-  function isie() {
-    if (!isset($this->uadata['is_ie'])) {
-      $this->uadata['is_ie'] = false;
-      if (strstr($this->brand, 'Internet Explorer')) {
-        $this->uadata['is_ie'] = true;
+  function getOS() {
+    if (!isset($this->uadata['os'])) {
+      $this->uadata['os'] = null;
+      if ($this->hasEngine('gecko')) {
+        if (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^;]+); ([^;]+); rv:([^\);]+)\)|', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = $regs[3];
+          $this->uadata['eng_version'] = $regs[4];
+        }
+        elseif (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^;]+); ([^;]+); m([^\);]+)\)|', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = $regs[3];
+          $this->uadata['eng_version'] = 'M'.$regs[4];
+        }
+        elseif (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^\);]+)\)|', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = null;
+          $this->uadata['eng_version'] = null;
+        }
+        elseif (preg_match('|Mozilla/5.0 Galeon/[^\(]+ \(([^;]+); ([^;]+);[^\)]+\)|', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = null;
+          $this->uadata['eng_version'] = null;
+        }
+        elseif (preg_match('|Debian/|', $this->uastring, $regs)) {
+          $this->uadata['os'] = 'Debian Linux';
+          $this->uadata['lang'] = null;
+          $this->uadata['eng_version'] = null;
+        }
+      }
+      elseif ($this->hasEngine('trident')) {
+        if (preg_match('/Mozilla\/[^\(]+ \(compatible; MSIE ([^;]+); [^\)]*((?:Mac|Win)[^;]+)[^\)]*\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $regs[1];
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = null;
+        }
+        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; MSIE ([^;]+)[^\)]*\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $regs[1];
+          $this->uadata['os'] = null;
+          $this->uadata['lang'] = null;
+        }
       }
+      elseif ($this->hasEngine('khtml')) {
+        if (preg_match('/Mozilla\/[^\(]+ \(compatible; Konqueror\/([^;]+); ([^;]+); ([^;]+); ([^;]+); ([^\);]+)\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $regs[1];
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = $regs[5];
+        }
+        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; Konqueror\/([^;]+); ([^\);]+)([^\)]+)\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $regs[1];
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = null;
+        }
+        elseif (preg_match('|Mozilla/5.0 \(([^;]+); U; ([^;]+); ([^\);]+)\)|', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[2];
+          $this->uadata['lang'] = $regs[3];
+          $this->uadata['eng_version'] = null;
+        }
+        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; [^;]+; ([^\);]+)\)/i', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[1];
+          $this->uadata['lang'] = null;
+          $this->uadata['eng_version'] = null;
+        }
+      }
+      elseif ($this->hasEngine('presto')) {
+        if (preg_match('/Opera\/[^\(]+ \(([^;]+)[^\)]+\) +\[([a-z_-]+)\]/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $this->getVersion();
+          $this->uadata['os'] = $regs[1];
+          $this->uadata['lang'] = $regs[2];
+        }
+        elseif (preg_match('/Opera\/[^\(]+ \(([^;]+); [^\)]+; ([a-z_-]+)\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $this->getVersion();
+          $this->uadata['os'] = $regs[1];
+          $this->uadata['lang'] = $regs[2];
+        }
+        elseif (preg_match('/Mozilla\/[^\(]+ \(compatible; [^;]+; ([^;]+)\) Opera [^ ]+ \[([a-z_-]+)\]/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $this->getVersion();
+          $this->uadata['os'] = $regs[1];
+          $this->uadata['lang'] = $regs[2];
+        }
+      }
+      elseif ($this->hasEngine('nscp')) {
+        if (preg_match('/Mozilla\/([0-9a-zA-Z\.+]+) \[([a-z_-]+)\] \(([^;]+); [^\)]+\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = $regs[1];
+          $this->uadata['os'] = $regs[3];
+          $this->uadata['lang'] = $regs[2];
+        }
+      }
+      elseif ($this->hasEngine('gzilla')) {
+        $this->uadata['eng_version'] = $this->getVersion();
+        $this->uadata['os'] = null;
+        $this->uadata['lang'] = null;
+      }
+      elseif ($this->hasEngine('links')) {
+        if (preg_match('/ELinks[^\(]+\([^;]+; ([^;]+);[^\)]+\)/i', $this->uastring, $regs)) {
+          $this->uadata['eng_version'] = null;
+          $this->uadata['os'] = $regs[1];
+          $this->uadata['lang'] = null;
+        }
+      }
+      else {
+        $this->uadata['eng_version'] = null;
+        $this->uadata['lang'] = null;
+        if (preg_match('/AmigaOS/i', $this->uastring, $regs)) {
+          $this->uadata['os'] = 'AmigaOS';
+        }
+        elseif (preg_match('/curl\/[^\(]+\(([^\);]+)/i', $this->uastring, $regs)) {
+          $this->uadata['os'] = $regs[1];
+        }
+      }
+      if ($this->uadata['os'] == 'Win 9x 4.90') { $this->uadata['os'] = 'Windows ME'; }
+      elseif ($this->uadata['os'] == 'WinNT4.0') { $this->uadata['os'] = 'Windows ME'; }
+      elseif ($this->uadata['os'] == 'Windows NT 5.0') { $this->uadata['os'] = 'Windows 2000'; }
+      elseif ($this->uadata['os'] == 'Windows NT 5.1') { $this->uadata['os'] = 'Windows XP'; }
+      elseif ($this->uadata['os'] == 'Windows NT 5.2') { $this->uadata['os'] = 'Windows 2003'; }
+      elseif ($this->uadata['os'] == 'Win95') { $this->uadata['os'] = 'Windows 95'; }
+      elseif ($this->uadata['os'] == 'Win98') { $this->uadata['os'] = 'Windows 98'; }
+      elseif (preg_match('/Mac ?OS ?X/i',$this->uadata['os'])) { $this->uadata['os'] = 'MacOS X'; }
+      elseif (preg_match('/Mac_P(ower|)PC/i',$this->uadata['os'])) { $this->uadata['os'] = 'MacOS'; }
+      elseif (strpos($this->uadata['os'], 'darwin') !== false) { $this->uadata['os'] = 'MacOS X'; }
+      elseif (strpos($this->uadata['os'], 'apple') !== false) { $this->uadata['os'] = 'MacOS'; }
+      elseif (strpos($this->uadata['os'], 'linux') !== false) { $this->uadata['os'] = 'Linux'; }
+
+      if (strpos($this->uadata['os'], 'Win') !== false) { $this->uadata['platform'] = 'windows'; }
+      elseif (strpos($this->uadata['os'], 'Mac') !== false) { $this->uadata['platform'] = 'mac'; }
+      elseif (strpos($this->uadata['os'], 'Linux') !== false) { $this->uadata['platform'] = 'linux'; }
+      elseif (strpos($this->uadata['os'], 'Solaris') !== false) { $this->uadata['platform'] = 'solaris'; }
+      elseif (strpos($this->uadata['os'], 'FreeBSD') !== false) { $this->uadata['platform'] = 'freebsd'; }
+      elseif (strpos($this->uadata['os'], 'AmigaOS') !== false) { $this->uadata['platform'] = 'amiga'; }
+      else { $this->uadata['platform'] = null; }
+
+      $this->uadata['lang'] = str_replace('_', '-', $this->uadata['lang']);
     }
-  return $this->uadata['is_ie'];
+  return $this->uadata['os'];
   }
 
-  function geckobased() {
-    if (!isset($this->uadata['is_gecko'])) {
-      $this->uadata['is_gecko'] = false;
-      if (strstr($this->uastring, 'Gecko/')) {
-        $this->uadata['is_gecko'] = true;
-      }
+  function getPlatform() {
+    if (!isset($this->uadata['platform'])) {
+      $this->uadata['platform'] = null;
+      // getOS() should get the date for us
+      $this->getOS();
     }
-  return $this->uadata['is_gecko'];
+  return $this->uadata['platform'];
   }
 
-  function geckodate() {
-    if (!isset($this->uadata['gdate'])) {
-      $this->uadata['gdate'] = 0;
-      if (ereg('Gecko/([0-9]+)', $this->uastring, $regs)) {
-        $this->uadata['gdate'] = $regs[1];
-      }
+  function getLanguage() {
+    if (!isset($this->uadata['lang'])) {
+      $this->uadata['lang'] = null;
+      // getOS() should get the date for us
+      $this->getOS();
     }
-  return $this->uadata['gdate'];
+  return $this->uadata['lang'];
   }
 
-  function khtmlbased() {
-    if (!isset($this->uadata['is_khtml'])) {
-      $this->uadata['is_khtml'] = false;
-      if (strstr($this->brand, 'Konqueror') || strstr($this->brand, 'Safari') || strstr($this->brand, 'AppleWebKit')) {
-        $this->uadata['is_khtml'] = true;
-      }
+  function getGeckoDate() {
+    if (!isset($this->uadata['geckodate'])) {
+      $this->uadata['geckodate'] = null;
+      // getEngine() should get the date for us
+      $this->getEngine();
     }
-  return $this->uadata['is_khtml'];
+  return $this->uadata['geckodate'];
   }
+
+  function isbot() { return $this->bot; }
+  function isns() { return (strpos($this->brand, 'Netscape') !== false); }
+  function isns4() { return ((strpos($this->brand, 'Netscape') !== false) && (intval($this->version) == 4)); }
+  function isie() { return $this->hasEngine('trident'); }
+  function geckodate() { return (!is_null($this->getGeckoDate())?$this->getGeckoDate():0); }
+  function geckobased() { return $this->hasEngine('gecko'); }
+  function khtmlbased() { return $this->hasEngine('khtml'); }
 }
 ?>