if(eregi("(opera) ([0-9]{1,2}.[0-9]{1,3}){0,1}", $useragent,
Allerdings bekomme ich da nicht heraus, um welche z.B. Windows-Version oder Linux-Version oder Mac-Version es sich handelt ... und was mache ich mit Bots?
Vielleicht sammelst Du einfach mal ein paar Tage oder Wochen die Daten aus User-Agent und schaust Dir an, was da so alles auftaucht. In etwa so (bei den Leerzeilen willkürlich gekürzt):
Aberja Checkomat
Advanced Browser (http://www.avantbrowser.com)
appie 1.1 (www.walhello.com)
Avant Browser (http://www.avantbrowser.com)
B+l+i+t+z+B+O+T+@+t+r+i+c+u+s+.+c+o+m (Mozilla compatible)
BlackBerry7230/3.7.1
BlackBerry7230/3.7.1 UP.Link/5.1.2.10
Cafi/1.02 (OSIX; 128-bit)
Der Bot aus Poppelsdorf (http://www.linkchecker.avaris-webdesign.de)
Enter new UA String or choose a common one. Then press ENTER
FavOrg
Gigabot/2.0
GoForIt.com
Googlebot/2.1 (+http://www.google.com/bot.html)
HeinrichderMiragoRobot (http://www.miragorobot.com/scripts/deinfo.asp)
ia_archiver
IE 5.5 Compatible Browser
Iltrovatore-Setaccio/1.2 (It-bot; http://www.iltrovatore.it/bot.html; info@iltro
IP*Works! V5 HTTP/S Component - by /n software - www.nsoftware.com
Java/1.4.1_02
Java/1.4.2_05
Java/1.5.0
larbin-mb (larbin-mb@dont.mail.me)
larbin-mb larbin-mb@dont.mail.me
libwww-perl/5.65
libwww-perl/5.76
Links SQL (http://gossamer-threads.com/scripts/links-sql/)
Mediapartners-Google/2.1
Microsoft Data Access Internet Publishing Provider Protocol Discovery
MJ12bot/v0.5.0 (http://www.majestic12.co.uk/projects/dsearch/mj12bot.php) run by
Mozilla/2.0 (compatible; Ask Jeeves/Teoma)
Mozilla/2.0 (compatible; MS FrontPage 5.0)
Mozilla/2.0 (compatible; MSIE 3.02; Update a; AK; AOL 4.0; Windows 95)
Mozilla/2.0 (compatible; MSIE 3.0; Windows 95)
Mozilla/3.0 (compatible)
Mozilla/3.0 (compatible; Indy Library)
Mozilla/3.0 (compatible; MSIE 3.01; Mac_PowerPC)
Mozilla/3.01 (compatible; NPT 0.0 beta)
Mozilla/3.01 (compatible;)
Mozilla/4.0
Mozilla/4.0 (0000000000; 0000 0000; 00000000000)
Mozilla/4.0 (compatible; BorderManager 3.0)
Mozilla/4.0 (compatible; Cerberian Drtrs Version-3.1-Build-16)
Mozilla/4.0 (compatible; Cerberian Drtrs Version-3.1-Build-17)
Mozilla/4.0 (compatible; grub-client-2.3)
Mozilla/4.0 (compatible; Lotus-Notes/6.0; Windows-NT)
Mozilla/4.0 (compatible; MSIE 4.01; AOL 4.0; Windows 98)
Mozilla/4.0 (compatible; MSIE 4.01; AOL 5.0; Mac_PPC)
Mozilla/4.0 (compatible; MSIE 4.01; AOL 7.0; Windows 95)
Mozilla/4.0 (compatible; MSIE 4.01; Windows 95)
Mozilla/4.0 (compatible; MSIE 4.01; Windows 98)
Mozilla/4.0 (compatible; MSIE 4.0; Windows 95)
Mozilla/4.0 (compatible; MSIE 4.5; Mac_PowerPC)
Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)
Mozilla/4.0 (compatible; MSIE 5.01; AOL 5.0; Windows NT)
Mozilla/4.0 (compatible; MSIE 5.01; AOL 8.0; Windows NT 5.0)
Mozilla/4.0 (compatible; MSIE 5.01; Windows 95)
Mozilla/4.0 (compatible; MSIE 5.01; Windows 95; DT)
Mozilla/4.0 (compatible; MSIE 5.01; Windows 95; pi 3.0.0.0)
Mozilla/4.0 (compatible; MSIE 5.0; AOL 5.0; Windows 95; DigExt)
Mozilla/4.0 (compatible; MSIE 5.0; AOL 5.0; Windows 98; DigExt)
Mozilla/4.0 (compatible; MSIE 5.0; Linux 2.4.18doc i586) Opera 6.0 [en]
Mozilla/4.0 (compatible; MSIE 5.0; Linux) Opera 5.0 [en]
Mozilla/4.0 (compatible; MSIE 5.0; Linux) Opera 6.03 [de]
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) Opera 7.21 [en]
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; 1&1 Internet AG)
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; BCD2000)
Mozilla/4.03 [de] (Win95; I)
Mozilla/4.05 (Macintosh; I; PPC)
Mozilla/5.0 (compatible; Konqueror/3.2; Linux 2.4.27; X11) (KHTML, like Gecko)
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040530 Debian/1.6-6.back
Opera/7.22 (Windows NT 5.0; U) [de]
PEERbot www.peerbot.com
PHP version tracker
PHP/4.2.2
pipeLiner/0.3a (PipeLine Spider; http://www.pipeline-search.com/webmaster.html;
Plucker/Py-@@VERSION@@
psbot/0.1 (+http://www.picsearch.com/bot.html)
Seekbot/1.0 (http://www.seekbot.net/bot.html) HTTPFetcher/0.3
Seekbot/1.0 (http://www.seekbot.net/bot.html) RobotsTxtFetcher/1.1
SlimBrowser
SpurlBot/0.2
T-Online Browser
TSM-100v/42190013 Browser/1.2.1 Profile/MIDP-1.0 Configuration/CLDC-1.0 UP.Link/
TurnitinBot/2.0 (http://www.turnitin.com/robot/crawlerinfo.html)
TurnitinBot/2.0 http://www.turnitin.com/robot/crawlerinfo.html
UP.Browser/6.1.0.1.140 (Google CHTML Proxy/1.0)
User-Agent: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
uû¿v
W3C_Validator/1.305.2.148 libwww-perl/5.800
Wget/1.5.3
Wget/1.7
Wget/1.9.1
Witzbold 08/15
www.adressendeutschland.de
www.mtel.com
Xenu Link Sleuth 1.2e
Yahoo-MMCrawler/3.x (mms dash mmcrawler dash support at yahoo dash inc dot com)
ZipppBot/0.11 (ZipppBot; http://www.zippp.net; webmaster@zippp.net)