Mam taką funkcję:

[PHP] pobierz, plaintext 
function browserType() {
global $HTTP_USER_AGENT;
 
$borwserTypes = array (
"(Opera)/([0-9]{1,2}).[0-9]{1,3}" => "Opera", // a to gówno musi być przed IE, bo mozna zmieniać w nim UA
"(Opera) ([0-9]{1,2}).[0-9]{1,3}" => "Opera",
"(MSIE) ([0-9]{1,2}.[0-9]{1,3})" => "MSIE", // musi być na pierwszym miejscu - przed Mozillą
"(netscape6)/([0-9].[0-9]{1,3})" => "Netscape",
"(netscape)/([0-9].[0-9]{1,3})" => "Netscape",
"(Firebird)/([0-9]{1,2}.[0-9]{1,2})"=>"Firebird",
"(Mozilla)/[0-9]{1,2}.[0-9]{1,3}.*rv[0-9]{1,2}.[0-9]{1,3})" => "Mozilla",
"Scanner" => "Scanner",
"Safari/([0-9]{1,3}.[0-9]{1,3})" => "Mac-Safari",
"(Lynx) ([0-9]{1,2}.[0-9]{1,2}.[0-9]{1,2})" => "Lynx",
"libwww" => "Lynx",
"Googlebot/([0-9]{1,2}.[0-9]{1,3})" => "Googlebot",
"Mediapartners-Google/([0-9]{1,2}.[0-9]{1,3})" => "Googlebot",
"Netsprint" => "Netsprint",
"Homenet-Search" => "Homenet-Search",
"Almaden" => "almaden",
"Gooru-WebSpider" => "Gooru-WebSpider",
"Jakarta" => "Jakarta",
"NPBot" => "NPBot",
"WebTV" => "WebTV",
"NetMechanic" => "NetMechanic",
"Links Manager" => "Links Manager",
"Links" => "Links",
"msnbot" => "msnbot",
"Prodigy" => "Prodigy",
"navipress" => "NaviPressAOL",
"AOL" => "AOL",
"pocket" => "Pocket Internet Explorer",
"mspie" => "Pocket Internet Explorer",
"Oracle"=>"Oracle",
"w3cline" => "W3C LineMode",
"amaya" => "amaya",
"ncsa" => "NCSA Mosaic",
"Webtrends" => "WebTrends",
"Lycos" => "Lycos",
"SuperSpider" => "SuperSpider",
"LinkAlarm" => "LinkAlarm",
"Checkbot" => "Checkbot",
"ToolPak" => "ToolPak",
"Slurp" => "Slurp",
"(konqueror)/([0-9]{1,2}.[0-9]{1,3})" => "Konqueror",
"Powermarks" => "Powermarks",
"BorderManager" => "BorderManager",
"WebVCR" => "WebVCR",
"Gulliver" => "Gulliver",
"Fireball" => "Fireball",
"WebComp***" => "WebComp***",
"GetRight" => "GetRight",
"HotJava" => "HotJava",
"nokia" => "Nokia Communicator",
"BeOS" => "BeOS",
"amigavoy" => "Amiga Voyager",
"amiga-aweb" => "Amiga AWeb",
"Ibrowse" => "Ibrowse",
"lotus" => "Lotus Notes",
"teleport" => "Teleport Pro",
"WebWhacker" => "WebWhacker",
"WebCrawler" => "WebCrawler",
"Web Downloader" => "Web Downloader",
"Scooter/([0-9]{1,2}.[0-9]{1,3})" => "Scooter",
"Szukacz/([0-9]{1,2}.[0-9]{1,3})" => "Szukacz",
"TurnitinBot/([0-9]{1,2}.[0-9]{1,3})" => "TurnitinBot",
"Zyborg" => 'Zyborg',
"Lynx" => 'Lynx',
"Links" => 'Links',
"Zeus ([0-9]{1,2}.[0-9]{1,3})" => "Zeus",
"DeltaScan" => "deltaSCAN",
"Baiduspider" => "Baiduspider",
"SurveyBot/([0-9]{1,2}.[0-9]{1,3})" => "SurveyBot",
"Pompos/([0-9]{1,2}.[0-9]{1,3})" => "Pompos",
"Pajaczek/([0-9]{1,2}.[0-9]{1,3})" => "Pajaczek",
"Openfind" => "Openfind",
"netoskop" => "netoskop",
"MSFrontPage/([0-9]{1,2}.[0-9]{1,3})" => "MSFrontPage",
"MS FrontPage ([0-9]{1,2}.[0-9]{1,3})" => "MSFrontPage",
"Gaisbot" => "Gaisbot",
"WP" => "WP",
"Mozilla" => "Mozilla",
"w3m" => "w3m");
 
$found = false;
unset($browser);
while (list ($key, $val) = each ($borwserTypes) and empty($browser))
if (eregi($key,$HTTP_USER_AGENT,$regs))
$browser = $val." ".$regs[2];
 
if (empty($browser))
$browser = $HTTP_USER_AGENT;
 
return $browser;
} // browserType(
[PHP] pobierz, plaintext 

Kod zapożyczony stąd:
http://www.foonews.info/pl-comp-lang-php/5...et_browser.html

Próbuje to wyświetlić na różne sposoby:

[PHP] pobierz, plaintext 
$browser = browserType();
echo $browser;
print_r($browser);
[PHP] pobierz, plaintext 

Ale nic się nie wyświetla. Co robię źle?

OK - echo działa, tylko trzeba było zamienić zmienną w pętli z $HTTP_USER_AGENT na $_SERVER['HTTP_USER_AGENT'].

Dodałem też do tablicy komórkę dla Chrome:

[PHP] pobierz, plaintext 
"Chrome" => "Chrome"
[PHP] pobierz, plaintext 

i to działa, tylko, że nie rozpoznaje wersji Chrome. Pokusiłby się ktoś o napisanie kodu rozpoznającego wersję Chrome?

Masz włączone pokazywanie błędów? Być może jest jakiś error, warning...