Extension talk:UserInfo

doesn't work with 1.16
The extension doesn't seem to work with MW 1.16 and current Parser extension. Including it leads to a blank wiki page and the following warnings/errors in the httpd logs:

[Mon Jan 10 17:20:46 2011] [error] [client 10.1.5.224] PHP Warning: Parameter 2 to wfUserIpDefine expected to be a reference, value given in /var/www/wiki/includes/Hooks.php on line 133 [Mon Jan 10 17:20:46 2011] [error] [client 10.1.5.224] PHP Fatal error: Call to a member function matchStartAndRemove on a non-object in /var/www/wiki/includes/parser/Parser.php on line 2820 [Mon Jan 10 17:20:47 2011] [error] [client 10.1.5.224] PHP Warning: Parameter 2 to wfUserIpDefine expected to be a reference, value given in /var/www/wiki/includes/Hooks.php on line 133 [Mon Jan 10 17:20:47 2011] [error] [client 10.1.5.224] PHP Warning: array_map: An error occurred while invoking the map callback in /var/www/wiki/includes/Title.php on line 1224 [Mon Jan 10 17:20:47 2011] [error] [client 10.1.5.224] PHP Fatal error: Call to a member function matchStartAndRemove on a non-object in /var/www/wiki/includes/parser/Parser.php on line 2820

Jan 10, 2011

I found a few minor, but irritating, buts in UserInfo.php, so I fixed them. I'm not part of the development, so I thought I"d put the result here
<?php
 * 1) To install:
 * 2) place code in extensions/userInfo/userInfo.php
 * 3) add require_once("extensions/userInfo/userInfo.php"); to LocalSettings.php.

if( !defined( "MEDIAWIKI" ) ) {  die( "Invalid entry point." ); } define( "MAG_USERIP", "magicuserip"); define( "MAG_USERREALIP", "magicuserrealip"); define( "MAG_USEROS", "magicuseros"); define( "MAG_USERFULLBROWSER", "magicuserfullbw"); define( "MAG_USERBROWSER", "magicuserbw"); $wgHooks[ "LanguageGetMagic" ][] = "wfUserIpDefine"; function wfUserIpDefine( &$aWikiWords, $langID ) {  $aWikiWords[ MAG_USERIP ] = array( 0, "UserIP" ); $aWikiWords[ MAG_USERREALIP ] = array( 0, "UserRealIP" ); $aWikiWords[ MAG_USEROS ] = array( 0, "UserOS" ); $aWikiWords[ MAG_USERFULLBROWSER ] = array( 0, "UserFullBrowser" ); $aWikiWords[ MAG_USERBROWSER ] = array( 0, "UserBrowser" ); return true; } $wgHooks[ "ParserGetVariableValueSwitch" ][] = "wfUserIpAssign"; function wfUserIpAssign( &$parser, &$cache, &$magicWordId, &$ret ) { if (empty($_SERVER['REMOTE_ADDR'])) $_SERVER['REMOTE_ADDR'] = "99.99.99.99"; switch ($magicWordId) {     case MAG_USERIP: $ret = $_SERVER['REMOTE_ADDR']; break; case MAG_USERREALIP: if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet {           $ret=$_SERVER['HTTP_CLIENT_IP']; }        elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy {           $ret=$_SERVER['HTTP_X_FORWARDED_FOR']; }        else {           $ret=$_SERVER['REMOTE_ADDR']; }        break; case MAG_USEROS: $browser_info = browser_detection('full'); $browser_info[] = browser_detection('moz_version'); $os = ''; switch ($browser_info[5]) {           case 'win': $os .= 'Windows '; break; case 'nt': $os .= 'Windows NT '; break; case 'lin': $os .= 'Linux '; break; case 'mac': $os .= 'Mac '; break; case 'unix': $os .= 'Unix Version: '; break; default: $os .= $browser_info[5]; }        if ( $browser_info[5] == 'nt' ) {           if ($browser_info[6] == 5) {              $os .= '5.0 (Windows 2000)'; }           elseif ($browser_info[6] == 5.1) {              $os .= '5.1 (Windows XP)'; }        }         elseif ( ( $browser_info[5] == 'mac' ) &&  ( $browser_info[6] >= 10 ) ) {           $os .=  'OS X'; }        elseif ( $browser_info[5] == 'lin' ) {           $os .= ( $browser_info[6] != '' ) ? 'Distro: '. ucfirst ($browser_info[6] ) : 'Smart Move!!!'; }        elseif ( $browser_info[6] == '' ) {           $os .=  ' (version unknown)'; }        else {           $os .=  strtoupper( $browser_info[6] ); }        $ret = $os; break; case MAG_USERBROWSER: $browser_info = browser_detection('full'); $browser_info[] = browser_detection('moz_version'); $bw = ''; if ($browser_info[0] == 'moz' ) {                               $a_temp = $browser_info[count( $browser_info ) - 1];// the moz array is last item $bw .= ($a_temp[0] != 'mozilla') ? ucfirst($a_temp[0]). ' ' : ucfirst($a_temp[0]). ' ';                               $bw .= $a_temp[1]; }                       elseif  ( $browser_info[0] == 'ns' ) {                               $bw .= 'Netscape'; $bw .= $browser_info[1]. ' ';                       }                        else {                               $bw .= ($browser_info[0] == 'ie') ? strtoupper($browser_info[7]) : ucwords($browser_info[7]); $bw .= ' '. $browser_info[1]; }        $ret = $bw; break; case MAG_USERFULLBROWSER: $browser_info = browser_detection('full'); $bw = ''; $browser_info[] = browser_detection('moz_version'); if ($browser_info[0] == 'moz' ) {                               $a_temp = $browser_info[count( $browser_info ) - 1];// the moz array is last item $bw .= ($a_temp[0] != 'mozilla') ? 'Mozilla/ '. ucfirst($a_temp[0]). ' ' : ucfirst($a_temp[0]). ' ';                               $bw .= $a_temp[1]. ' ';                               $bw .= 'ProductSub: '; $bw .= ( $a_temp[4] != '' ) ? $a_temp[4]. ' ' : 'Not Available '; $bw .= ($a_temp[0] != 'galeon')?'RV version: '. $a_temp[3] : ''; }                       elseif  ( $browser_info[0] == 'ns' ) {                               $bw .= 'Netscape '; $bw .= $browser_info[1]. ' ';                       }                        else {                               $bw .= ($browser_info[0] == 'ie') ? strtoupper($browser_info[7]) : ucwords($browser_info[7]); $bw .= ' '. $browser_info[1]; }        $ret = $bw; break; default: return false; }  return true; } $wgExtensionCredits[ "variable" ][] = array(       "name" => "UserInfo",        "description" => "Displays some info (IP, OS, browser) about the user.",        "author" => "Nicolas Labriet",        "url" => "http://www.mediawiki.org/wiki/Extension:UserInfo",        "version" => "1.0", ); $wgHooks[ "MagicWordwgVariableIDs" ][] = "wfUserIpDeclare"; function wfUserIpDeclare( &$aCustomVariableIds ) {       $aCustomVariableIds[] = MAG_USERIP; $aCustomVariableIds[] = MAG_USERREALIP; $aCustomVariableIds[] = MAG_USEROS; $aCustomVariableIds[] = MAG_USERFULLBROWSER; $aCustomVariableIds[] = MAG_USERBROWSER; return true; } /*******************************************************************************                  OS and browser detection by techpatterns /* Script Name: Full Featured PHP Browser/OS detection Author: Harald Hope, Website: http://techpatterns.com/ Script Source URI: http://techpatterns.com/downloads/php_browser_detection.php Version 4.9.14 Copyright (C) 25 December 2007 Special thanks to alanjstr for cleaning up the code, especially on function browser_version, which he improved greatly. Also to Tapio Markula, for his initial inspiration of creating a useable php browser detector. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Get the full text of the GPL here: http://www.gnu.org/licenses/gpl.txt Coding conventions: http://cvs.sourceforge.net/viewcvs.py/phpbb/phpBB2/docs/codingstandards.htm?rev=1.3 /****************************************** this is currently set to accept 11 parameters, although you can add as many as you want: 1. safe - returns true/false, you can determine what makes the browser be safe lower down, currently it's set for ns4 and pre version 1 mozillas not being safe, plus all older browsers 2. ie_version - tests to see what general IE it is, ie5x-6, ie4, or ieMac, returns these values. 3. moz_version - returns array of moz version, version number (includes full version, + etc), rv number (for math       comparison), rv number (for full rv, including alpha and beta versions), and release date 4. dom - returns true/false if it is a basic dom browser, ie >= 5, opera >= 5, all new mozillas, safaris, konquerors 5. os - returns which os is being used 6. os_number - returns windows versions, 95, 98, me, nt 4, nt 5 [windows 2000], nt 5.1 [windows xp], Just added: os x detection[crude] otherwise returns false 7. browser - returns the browser name, in shorthand: ie, ie4, ie5x, op, moz, konq, saf, ns4 8. number - returns the browser version number, if available, otherwise returns '' [not available] 9. full - returns this array: $browser_name, $version_number, $ie_version, $dom_browser, $safe_browser, $os, $os_number, $s_browser [the browser search string from the browser array], $type 10. type - returns whether it's a bot or a browser 11. math_number - returns basic version number, for math comparison, ie. 1.2rel2a becomes 1.2 // main script, uses two other functions, which_os and browser_version as needed function browser_detection( $which_test ) { /*       uncomment the global variable declaration if you want the variables to be available on a global level throughout your php page, make sure that php is configured to support the use of globals first! Use of globals should be avoided however, and they are not necessary with this script */       /*global $dom_browser, $safe_browser, $browser_user_agent, $os, $browser_name, $s_browser, $ie_version, $version_number, $os_number, $b_repeat, $moz_version, $moz_version_number, $moz_rv, $moz_rv_full, $moz_release;*/ static $dom_browser, $safe_browser, $browser_user_agent, $os, $browser_name, $s_browser, $ie_version, $version_number, $os_number, $b_repeat, $moz_version, $moz_version_number, $moz_rv, $moz_rv_full, $moz_release, $type, $math_version_number; /*        this makes the test only run once no matter how many times you call it        since all the variables are filled on the first run through, it's only a matter of returning the the right ones */       if ( !$b_repeat ) {               //initialize all variables with default values to prevent error $dom_browser = false; $type = 'bot';// default to bot since you never know with bots $safe_browser = false; $os = ''; $os_number = ''; $a_os_data = ''; $browser_name = ''; $version_number = ''; $math_version_number = ''; $ie_version = ''; $moz_version = ''; $moz_version_number = ''; $moz_rv = ''; $moz_rv_full = ''; $moz_release = ''; $b_success = false;// boolean for if browser found in main test //make navigator user agent string lower case to make sure all versions get caught // isset protects against blank user agent failure $browser_user_agent = ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) ? strtolower( $_SERVER['HTTP_USER_AGENT'] ) : ''; /*               pack the browser type array, in this order the order is important, because opera must be tested first, then omniweb [which has safari data in string], same for konqueror, then safari, then gecko, since safari navigator user agent id's with 'gecko' in string. note that $dom_browser is set for all modern dom browsers, this gives you a default to use. array[0] = id string for useragent, array[1] is if dom capable, array[2] is working name for browser, array[3] identifies navigator useragent type Note: all browser strings are in lower case to match the strtolower output, this avoids possible detection errors Note: There are currently 5 navigator user agent types: bro - modern, css supporting browser. bbro - basic browser, text only, table only, defective css implementation bot - search type spider dow - known download agent lib - standard http libraries */               // known browsers, list will be updated routinely, check back now and then $a_browser_types[] = array( 'opera', true, 'op', 'bro' ); $a_browser_types[] = array( 'omniweb', true, 'omni', 'bro' );// mac osx browser, now uses khtml engine: $a_browser_types[] = array( 'msie', true, 'ie', 'bro' ); $a_browser_types[] = array( 'konqueror', true, 'konq', 'bro' ); $a_browser_types[] = array( 'safari', true, 'saf', 'bro' ); // covers Netscape 6-7, K-Meleon, Most linux versions, uses moz array below $a_browser_types[] = array( 'gecko', true, 'moz', 'bro' ); $a_browser_types[] = array( 'netpositive', false, 'netp', 'bbro' );// beos browser $a_browser_types[] = array( 'lynx', false, 'lynx', 'bbro' ); // command line browser $a_browser_types[] = array( 'elinks ', false, 'elinks', 'bbro' ); // new version of links $a_browser_types[] = array( 'elinks', false, 'elinks', 'bbro' ); // alternate id for it               $a_browser_types[] = array( 'links ', false, 'links', 'bbro' ); // old name for links $a_browser_types[] = array( 'links', false, 'links', 'bbro' ); // alternate id for it               $a_browser_types[] = array( 'w3m', false, 'w3m', 'bbro' ); // open source browser, more features than lynx/links $a_browser_types[] = array( 'webtv', false, 'webtv', 'bbro' );// junk ms webtv $a_browser_types[] = array( 'amaya', false, 'amaya', 'bbro' );// w3c browser $a_browser_types[] = array( 'dillo', false, 'dillo', 'bbro' );// linux browser, basic table support $a_browser_types[] = array( 'ibrowse', false, 'ibrowse', 'bbro' );// amiga browser $a_browser_types[] = array( 'icab', false, 'icab', 'bro' );// mac browser $a_browser_types[] = array( 'crazy browser', true, 'ie', 'bro' );// uses ie rendering engine $a_browser_types[] = array( 'sonyericssonp800', false, 'sonyericssonp800', 'bbro' );// sony ericsson handheld // search engine spider bots: $a_browser_types[] = array( 'googlebot', false, 'google', 'bot' );// google $a_browser_types[] = array( 'mediapartners-google', false, 'adsense', 'bot' );// google adsense $a_browser_types[] = array( 'yahoo-verticalcrawler', false, 'yahoo', 'bot' );// old yahoo bot $a_browser_types[] = array( 'yahoo! slurp', false, 'yahoo', 'bot' ); // new yahoo bot $a_browser_types[] = array( 'yahoo-mm', false, 'yahoomm', 'bot' ); // gets Yahoo-MMCrawler and Yahoo-MMAudVid bots $a_browser_types[] = array( 'inktomi', false, 'inktomi', 'bot' ); // inktomi bot $a_browser_types[] = array( 'slurp', false, 'inktomi', 'bot' ); // inktomi bot $a_browser_types[] = array( 'fast-webcrawler', false, 'fast', 'bot' );// Fast AllTheWeb $a_browser_types[] = array( 'msnbot', false, 'msn', 'bot' );// msn search $a_browser_types[] = array( 'ask jeeves', false, 'ask', 'bot' ); //jeeves/teoma $a_browser_types[] = array( 'teoma', false, 'ask', 'bot' );//jeeves teoma $a_browser_types[] = array( 'scooter', false, 'scooter', 'bot' );// altavista $a_browser_types[] = array( 'openbot', false, 'openbot', 'bot' );// openbot, from taiwan $a_browser_types[] = array( 'ia_archiver', false, 'ia_archiver', 'bot' );// ia archiver $a_browser_types[] = array( 'zyborg', false, 'looksmart', 'bot' );// looksmart $a_browser_types[] = array( 'almaden', false, 'ibm', 'bot' );// ibm almaden web crawler $a_browser_types[] = array( 'baiduspider', false, 'baidu', 'bot' );// Baiduspider asian search spider $a_browser_types[] = array( 'psbot', false, 'psbot', 'bot' );// psbot image crawler $a_browser_types[] = array( 'gigabot', false, 'gigabot', 'bot' );// gigabot crawler $a_browser_types[] = array( 'naverbot', false, 'naverbot', 'bot' );// naverbot crawler, bad bot, block $a_browser_types[] = array( 'surveybot', false, 'surveybot', 'bot' );// $a_browser_types[] = array( 'boitho.com-dc', false, 'boitho', 'bot' );//norwegian search engine $a_browser_types[] = array( 'objectssearch', false, 'objectsearch', 'bot' );// open source search engine $a_browser_types[] = array( 'answerbus', false, 'answerbus', 'bot' );// http://www.answerbus.com/, web questions $a_browser_types[] = array( 'sohu-search', false, 'sohu', 'bot' );// chinese media company, search component $a_browser_types[] = array( 'iltrovatore-setaccio', false, 'il-set', 'bot' ); // various http utility libaries $a_browser_types[] = array( 'w3c_validator', false, 'w3c', 'lib' ); // uses libperl, make first $a_browser_types[] = array( 'wdg_validator', false, 'wdg', 'lib' ); // $a_browser_types[] = array( 'libwww-perl', false, 'libwww-perl', 'lib' ); $a_browser_types[] = array( 'jakarta commons-httpclient', false, 'jakarta', 'lib' ); $a_browser_types[] = array( 'python-urllib', false, 'python-urllib', 'lib' ); // download apps $a_browser_types[] = array( 'getright', false, 'getright', 'dow' ); $a_browser_types[] = array( 'wget', false, 'wget', 'dow' );// open source downloader, obeys robots.txt // netscape 4 and earlier tests, put last so spiders don't get caught $a_browser_types[] = array( 'mozilla/4.', false, 'ns', 'bbro' ); $a_browser_types[] = array( 'mozilla/3.', false, 'ns', 'bbro' ); $a_browser_types[] = array( 'mozilla/2.', false, 'ns', 'bbro' ); //$a_browser_types[] = array( '', false ); // browser array template /*                moz types array note the order, netscape6 must come before netscape, which is how netscape 7 id's itself. rv comes last in case it is plain old mozilla */               $moz_types = array( 'firebird', 'phoenix', 'firefox', 'iceweasel', 'galeon', 'k-meleon', 'camino', 'epiphany', 'netscape6', 'netscape', 'multizilla', 'rv' ); /*               run through the browser_types array, break if you hit a match, if no match, assume old browser or non dom browser, assigns false value to $b_success. Topherbyte pointed out that looping a count counts each time, so that's fixed */               $i_count = count($a_browser_types); for ($i = 0; $i < $i_count; $i++) {                       //unpacks browser array, assigns to variables $s_browser = $a_browser_types[$i][0];// text string to id browser from array if (stristr($browser_user_agent, $s_browser)) {                               // it defaults to true, will become false below if needed // this keeps it easier to keep track of what is safe, only //explicit false assignment will make it false. $safe_browser = true; // assign values based on match of user agent string $dom_browser = $a_browser_types[$i][1];// hardcoded dom support from array $browser_name = $a_browser_types[$i][2];// working name for browser $type = $a_browser_types[$i][3];// sets whether bot or browser switch ( $browser_name ) {                                       // this is modified quite a bit, now will return proper netscape version number // check your implementation to make sure it works case 'ns': $safe_browser = false; $version_number = browser_version( $browser_user_agent, 'mozilla' ); break; case 'moz': /*                                               note: The 'rv' test is not absolute since the rv number is very different on                                                 different versions, for example Galean doesn't use the same rv version as Mozilla, neither do later Netscapes, like 7.x. For more on this, read the full mozilla numbering conventions here: http://www.mozilla.org/releases/cvstags.html */                                               // this will return alpha and beta version numbers, if present $moz_rv_full = browser_version( $browser_user_agent, 'rv' ); // this slices them back off for math comparisons $moz_rv = substr( $moz_rv_full, 0, 3 ); // this is to pull out specific mozilla versions, firebird, netscape etc.. $i_count = count( $moz_types ); for ( $i = 0; $i < $i_count; $i++ ) {                                                       if ( stristr( $browser_user_agent, $moz_types[$i] ) ) {                                                               $moz_version = $moz_types[$i]; $moz_version_number = browser_version( $browser_user_agent, $moz_version ); break; }                                               }                                                // this is necesary to protect against false id'ed moz'es and new moz'es. // this corrects for galeon, or any other moz browser without an rv number if ( !$moz_rv ) {                                                        $moz_rv = substr( $moz_version_number, 0, 3 ); $moz_rv_full = $moz_version_number; /*                                                        // you can use this instead if you are running php >= 4.2 $moz_rv = floatval( $moz_version_number ); $moz_rv_full = $moz_version_number; */                                               }                                                // this corrects the version name in case it went to the default 'rv' for the test if ( $moz_version == 'rv' ) {                                                       $moz_version = 'mozilla'; }                                               //the moz version will be taken from the rv number, see notes above for rv problems $version_number = $moz_rv; // gets the actual release date, necessary if you need to do functionality tests $moz_release = browser_version( $browser_user_agent, 'gecko/' ); /*                                                Test for mozilla 0.9.x / netscape 6.x                                                test your javascript/CSS to see if it works in these mozilla releases, if it does, just default it to: $safe_browser = true; */                                               if ( ( $moz_release < 20020400 ) || ( $moz_rv < 1 ) ) {                                                       $safe_browser = false; }                                               break; case 'ie': $version_number = browser_version( $browser_user_agent, $s_browser ); // first test for IE 5x mac, that's the most problematic IE out there if ( stristr( $browser_user_agent, 'mac') ) {                                                       $ie_version = 'ieMac'; }                                               // this assigns a general ie id to the $ie_version variable elseif ( $version_number >= 5 ) {                                                       $ie_version = 'ie5x'; }                                               elseif ( ( $version_number > 3 ) && ( $version_number < 5 ) ) {                                                       $dom_browser = false; $ie_version = 'ie4'; // this depends on what you're using the script for, make sure this fits your needs $safe_browser = true; }                                               else {                                                       $ie_version = 'old'; $dom_browser = false; $safe_browser = false; }                                               break; case 'op': $version_number = browser_version( $browser_user_agent, $s_browser ); if ( $version_number < 5 )// opera 4 wasn't very useable. {                                                       $safe_browser = false; }                                               break; case 'saf': $version_number = browser_version( $browser_user_agent, $s_browser ); break; /*                                                Uncomment this section if you want omniweb to return the safari value Omniweb uses khtml/safari rendering engine, so you can treat it like safari if you want. */                                       /*                                         case 'omni': $s_browser = 'safari'; $browser_name = 'saf'; $version_number = browser_version( $browser_user_agent, 'applewebkit' ); break; */                                       default: $version_number = browser_version( $browser_user_agent, $s_browser ); break; }                               // the browser was id'ed                                $b_success = true; break; }               }                //assigns defaults if the browser was not found in the loop test if ( !$b_success ) {                       /*                                this will return the first part of the browser string if the above id's failed usually the first part of the browser string has the navigator useragent name/version in it. This will usually correctly id the browser and the browser number if it didn't get caught by the above routine. If you want a  to do a if browser ==  type test, just comment out all lines below except for the last line, and uncomment the last line. If you want undefined values, the browser_name is '', you can always test for that */                       // delete this part if you want an unknown browser returned $s_browser = substr( $browser_user_agent, 0, strcspn( $browser_user_agent, ';') ); // this extracts just the browser name from the string ereg('[^0-9][a-z]*-*\ *[a-z]*\ *[a-z]*', $s_browser, $r ); $s_browser = $r[0]; $version_number = browser_version( $browser_user_agent, $s_browser ); // then uncomment this part //$s_browser = '';//deletes the last array item in case the browser was not a match }               // get os data, mac os x test requires browser/version information, this is a change from older scripts $a_os_data = which_os( $browser_user_agent, $browser_name, $version_number ); $os = $a_os_data[0];// os name, abbreviated $os_number = $a_os_data[1];// os number or version if available // this ends the run through once if clause, set the boolean //to true so the function won't retest everything $b_repeat = true; // pulls out primary version number from more complex string, like 7.5a, // use this for numeric version comparison $m = array; if ( ereg('[0-9]*\.*[0-9]*', $version_number, $m ) ) {                       $math_version_number = $m[0]; //print_r($m); }       }        //$version_number = $_SERVER["REMOTE_ADDR"]; /*       This is where you return values based on what parameter you used to call the function $which_test is the passed parameter in the initial browser_detection('os') for example call */       switch ( $which_test ) {               case 'safe':// returns true/false if your tests determine it's a safe browser // you can change the tests to determine what is a safeBrowser for your scripts // in this case sub rv 1 Mozillas and Netscape 4x's trigger the unsafe condition return $safe_browser; break; case 'ie_version': // returns ieMac or ie5x return $ie_version; break; case 'moz_version':// returns array of all relevant moz information $moz_array = array( $moz_version, $moz_version_number, $moz_rv, $moz_rv_full, $moz_release ); return $moz_array; break; case 'dom':// returns true/fale if a DOM capable browser return $dom_browser; break; case 'os':// returns os name return $os; break; case 'os_number':// returns os number if windows return $os_number; break; case 'browser':// returns browser name return $browser_name; break; case 'number':// returns browser number return $version_number; break; case 'full':// returns all relevant browser information in an array $full_array = array( $browser_name, $version_number, $ie_version, $dom_browser, $safe_browser,                                $os, $os_number, $s_browser, $type, $math_version_number ); return $full_array; break; case 'type':// returns what type, bot, browser, maybe downloader in future return $type; break; case 'math_number':// returns numerical version number, for number comparisons return $math_version_number; break; default: break; } } // gets which os from the browser string function which_os ( $browser_string, $browser_name, $version_number ) {       // initialize variables $os = ''; $os_version = ''; /*       packs the os array use this order since some navigator user agents will put 'macintosh' in the navigator user agent string which would make the nt test register true */       $a_mac = array( 'mac68k', 'macppc' );// this is not used currently // same logic, check in order to catch the os's in order, last is always default item $a_unix = array( 'freebsd', 'openbsd', 'netbsd', 'bsd', 'unixware', 'solaris', 'sunos', 'sun4', 'sun5', 'suni86', 'sun', 'irix5', 'irix6', 'irix', 'hpux9', 'hpux10', 'hpux11', 'hpux', 'hp-ux', 'aix1', 'aix2', 'aix3', 'aix4', 'aix5', 'aix', 'sco', 'unixware', 'mpras', 'reliant', 'dec', 'sinix', 'unix' ); // only sometimes will you get a linux distro to id itself... $a_linux = array( 'ubuntu', 'kubuntu', 'xubuntu', 'mepis', 'xandros', 'linspire', 'sidux', 'kanotix', 'debian', 'opensuse', 'suse', 'fedora', 'redhat', 'slackware', 'slax', 'mandrake', 'mandriva', 'gentoo', 'sabayon', 'linux' ); $a_linux_process = array ( 'i386', 'i586', 'i686' );// not use currently // note, order of os very important in os array, you will get failed ids if changed $a_os = array( 'beos', 'os2', 'amiga', 'webtv', 'mac', 'nt', 'win', $a_unix, $a_linux ); // The above doesn't work because it doesn't include the arrays. This is messier but works $a_os = array( 'beos', 'os2', 'amiga', 'webtv', 'mac', 'nt', 'win',                        'freebsd', 'openbsd', 'netbsd', 'bsd', 'unixware', 'solaris',                        'sunos', 'sun4', 'sun5', 'suni86', 'sun', 'irix5', 'irix6', 'irix', 'hpux9',                        'hpux10', 'hpux11', 'hpux', 'hp-ux', 'aix1', 'aix2', 'aix3', 'aix4', 'aix5',                        'aix', 'sco', 'unixware', 'mpras', 'reliant', 'dec', 'sinix', 'unix',                        'ubuntu', 'kubuntu', 'xubuntu', 'mepis', 'xandros',                        'linspire', 'sidux', 'kanotix', 'debian', 'opensuse', 'suse', 'fedora',                        'redhat', 'slackware', 'slax', 'mandrake', 'mandriva', 'gentoo', 'sabayon', 'linux' ); //os tester $i_count = count( $a_os ); for ( $i = 0; $i < $i_count; $i++ ) {               //unpacks os array, assigns to variable $s_os = $a_os[$i]; //assign os to global os variable, os flag true on success //!stristr($browser_string, "linux" ) corrects a linux detection bug if ( !is_array( $s_os ) && stristr( $browser_string, $s_os ) && !stristr( $browser_string, "linux" ) ) {                       $os = $s_os; switch ( $os ) {                               case 'win': if ( strstr( $browser_string, '95' ) ) {                                               $os_version = '95'; }                                       elseif ( ( strstr( $browser_string, '9x 4.9' ) ) || ( strstr( $browser_string, 'me' ) ) ) {                                               $os_version = 'me'; }                                       elseif ( strstr( $browser_string, '98' ) ) {                                               $os_version = '98'; }                                       elseif ( strstr( $browser_string, '2000' ) )// windows 2000, for opera ID                                        { $os_version = 5.0; $os = 'nt'; }                                       elseif ( strstr( $browser_string, 'xp' ) )// windows 2000, for opera ID                                        { $os_version = 5.1; $os = 'nt'; }                                       elseif ( strstr( $browser_string, '2003' ) )// windows server 2003, for opera ID                                        { $os_version = 5.2; $os = 'nt'; }                                       elseif ( strstr( $browser_string, 'ce' ) )// windows CE                                        { $os_version = 'ce'; }                                       break; case 'nt': if ( strstr( $browser_string, 'nt 5.2' ) )// windows server 2003 {                                               $os_version = 5.2; $os = 'nt'; }                                       elseif ( strstr( $browser_string, 'nt 5.1' ) || strstr( $browser_string, 'xp' ) )// windows xp                                        { $os_version = 5.1;// }                                       elseif ( strstr( $browser_string, 'nt 5' ) || strstr( $browser_string, '2000' ) )// windows 2000 {                                               $os_version = 5.0; }                                       elseif ( strstr( $browser_string, 'nt 4' ) )// nt 4 {                                               $os_version = 4; }                                       elseif ( strstr( $browser_string, 'nt 3' ) )// nt 4 {                                               $os_version = 3; }                                       break; case 'mac': if ( strstr( $browser_string, 'os x' ) ) {                                               $os_version = 10; }                                       //this is a crude test for os x, since safari, camino, ie 5.2, & moz >= rv 1.3 //are only made for os x                                       elseif ( ( $browser_name == 'saf' ) || ( $browser_name == 'cam' ) ||                                                 ( ( $browser_name == 'moz' ) && ( $version_number >= 1.3 ) ) ||                                                 ( ( $browser_name == 'ie' ) && ( $version_number >= 5.2 ) ) ) {                                               $os_version = 10; }                                       break; default: break; }                       break; }               // check that it's an array, check it's the second to last item //in the main os array, the unix one that is               elseif ( is_array( $s_os ) && ( $i == ( count( $a_os ) - 2 ) ) ) {                       $i_count = count($s_os); for ($j = 0; $j < $i_count; $j++) {                               if ( stristr( $browser_string, $s_os[$j] ) ) {                                       $os = 'unix'; //if the os is in the unix array, it's unix, obviously...                                        $os_version = ( $s_os[$j] != 'unix' ) ? $s_os[$j] : '';// assign sub unix version from the unix array break; }                       }                }                 // check that it's an array, check it's the last item //in the main os array, the linux one that is               elseif ( is_array( $s_os ) && ( $i == ( count( $a_os ) - 1 ) ) ) {                       $i_count = count($s_os); for ($j = 0; $j < $i_count; $j++) {                               if ( stristr( $browser_string, $s_os[$j] ) ) {                                       $os = 'lin'; // assign linux distro from the linux array, there's a default //search for 'lin', if it's that, set version to '' $os_version = ( $s_os[$j] != 'linux' ) ? $s_os[$j] : ''; break; }                       }                }         }        // pack the os data array for return to main function $os_data = array( $os, $os_version ); return $os_data; } // function returns browser number, gecko rv number, or gecko release date //function browser_version( $browser_user_agent, $search_string, $substring_length ) function browser_version( $browser_user_agent, $search_string ) {       // 12 is the longest that will be required, handles release dates: 20020323; 0.8.0+ $substring_length = 12; //initialize browser number, will return '' if not found $browser_number = ''; // use the passed parameter for $search_string // start the substring slice right after these moz search strings // there are some cases of double msie id's, first in string and then with then number $start_pos = 0; /* this test covers you for multiple occurrences of string, only with ie though with for example google bot you want the first occurance returned, since that's where the numbering happens */ for ( $i = 0; $i < 4; $i++ ) {               //start the search after the first string occurrence if ( strpos( $browser_user_agent, $search_string, $start_pos ) !== false ) {                       //update start position if position found $start_pos = strpos( $browser_user_agent, $search_string, $start_pos ) + strlen( $search_string ); if ( $search_string != 'msie' ) {                               break; }               }                else {                       break; }       }        // this is just to get the release date, not other moz information // also corrects for the omniweb 'v'       if ( $search_string != 'gecko/' ) {                if ( $search_string == 'omniweb' ) {                       $start_pos += 2;// handles the v in 'omniweb/v532.xx                } else {                       $start_pos++; }       }        // Initial trimming $browser_number = substr( $browser_user_agent, $start_pos, $substring_length ); // Find the space, ;, or parentheses that ends the number $browser_number = substr( $browser_number, 0, strcspn($browser_number, ' );') );       //make sure the returned value is actually the id number and not a string        // otherwise return         if ( !is_numeric( substr( $browser_number, 0, 1 ) ) )        {                 $browser_number = ;         }        //$browser_number = strrpos( $browser_user_agent, $search_string );        return $browser_number; }
 * 1) To use:
 * 2) add  in the text to show the user's IP address
 * 3) add  in the text to show the user's "real" IP address
 * 4) add  in the text to show the user's Operating System
 * 5) add  in the text to show the user's web browser name
 * 6) add  in the text to show the user's full web browser name
 * 1) Not a valid entry point, skip unless MEDIAWIKI is defined