UA--uesr-agent--user agent, is the type of server judgment request, such as: the use of PC and mobile phone access to a website, the rendering of the picture is not the same.
The principle is that the user agent of the device is different
1 Main Browsers
Safari 5.1–mac
user-agent:mozilla/5.0 (Macintosh; U Intel Mac OS X 10_6_8; En-US) applewebkit/534.50 (khtml, like Gecko) version/5.1 safari/534.50
Safari 5.1–windows
user-agent:mozilla/5.0 (Windows; U Windows NT 6.1; En-US) applewebkit/534.50 (khtml, like Gecko) version/5.1 safari/534.50
IE 9.0
user-agent:mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; trident/5.0;
IE 8.0
user-agent:mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; trident/4.0)
IE 7.0
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)
IE 6.0
user-agent:mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Firefox 4.0.1–mac
user-agent:mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) gecko/20100101 firefox/4.0.1
Firefox 4.0.1–windows
user-agent:mozilla/5.0 (Windows NT 6.1; rv:2.0.1) gecko/20100101 firefox/4.0.1
Opera 11.11–mac
user-agent:opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U EN) presto/2.8.131 version/11.11
Opera 11.11–windows
user-agent:opera/9.80 (Windows NT 6.1; U EN) presto/2.8.131 version/11.11
Chrome 17.0–mac
user-agent:mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) applewebkit/535.11 (khtml, like Gecko) chrome/17.0.963.56 safari/535.11
2 Domestic Browsers
Maxthon
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Maxthon 2.0)
Tt
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Tencenttraveler 4.0)
The World 2.x
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)
The World 3.x
User-agent:? mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; The world)
Sogou Browser 1.x
User-agent:? mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; trident/4.0; SE 2.X METASR 1.0; SE 2.X METASR 1.0;. NET CLR 2.0.50727; SE 2.X METASR 1.0)
360SE
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)
Avant
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Avant Browser)
Green Browser
user-agent:mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)
3 Mobile device side
Safari IOS 4.33–iphone
user-agent:mozilla/5.0 (IPhone; U CPU iPhone os 4_3_3 like Mac os X; En-US) applewebkit/533.17.9 (khtml, like Gecko) version/5.0.2 mobile/8j2 safari/6533.18.5
Safari IOS 4.33–ipod Touch
user-agent:mozilla/5.0 (IPod; U CPU iPhone os 4_3_3 like Mac os X; En-US) applewebkit/533.17.9 (khtml, like Gecko) version/5.0.2 mobile/8j2 safari/6533.18.5
Safari IOS 4.33–ipad
user-agent:mozilla/5.0 (IPad; U CPU os 4_3_3 like Mac os X; En-US) applewebkit/533.17.9 (khtml, like Gecko) version/5.0.2 mobile/8j2 safari/6533.18.5
Android N1
user-agent:mozilla/5.0 (Linux; U Android 2.3.7; En-us; Nexus one build/frf91) applewebkit/533.1 (khtml, like Gecko) version/4.0 Mobile safari/533.1
Android QQ for Android
User-agent:mqqbrowser/26 mozilla/5.0 (Linux; U Android 2.3.7; ZH-CN; MB200 build/grj22; CyanogenMod-7) applewebkit/533.1 (khtml, like Gecko) version/4.0 Mobile safari/533.1
Android Opera Mobile
user-agent:opera/9.80 (Android 2.3.4; Linux; Opera mobi/build-1107180945; U EN-GB) presto/2.8.149 version/11.10
Android Pad Moto Xoom
user-agent:mozilla/5.0 (Linux; U Android 3.0; En-us; Xoom build/hri39) applewebkit/534.13 (khtml, like Gecko) version/4.0 safari/534.13
BlackBerry
user-agent:mozilla/5.0 (BlackBerry; U BlackBerry 9800; EN) applewebkit/534.1+ (khtml, like Gecko) version/6.0.0.337 Mobile safari/534.1+
WebOS HP Touchpad
user-agent:mozilla/5.0 (Hp-tablet; Linux; hpwos/3.0.0; U En-US) applewebkit/534.6 (khtml, like Gecko) wosbrowser/233.70 safari/534.6 touchpad/1.0
Nokia N97
user-agent:mozilla/5.0 (symbianos/9.4; series60/5.0 nokian97-1/20.0.019; profile/midp-2.1 configuration/cldc-1.1) applewebkit/525 (khtml, like Gecko) browserng/7.1.18124
Windows Phone Mango
user-agent:mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; trident/5.0; iemobile/9.0; HTC; Titan)
UC Standard
user-agent:nokia5700/ucweb7.0.2.37/28/999
Ucopenwave
user-agent:openwave/ucweb7.0.2.37/28/999
UC Opera
user-agent:mozilla/4.0 (compatible; MSIE 6.0; ) opera/ucweb7.0.2.37/28/999
Browser UA Rollup