获取访客浏览器和操作系统

<?php

$useragent=$useragent=$_SERVER['HTTP_USER_AGENT'];

/*取得客户端浏览器版本*/
function browser($ua) {
	if (stripos($ua, "Googlebot")) {
		$browser = "谷歌蜘蛛";
	}
	elseif(stripos($ua, "Baiduspider") !== false) {
		$browser = "百度蜘蛛";
	}
	elseif(stripos($ua, "Yahoo!") !== false) {
		$browser = "雅虎蜘蛛";
	}
	elseif(stripos($ua, "bingbot")) {
		$browser = "必应蜘蛛";
	}
	elseif(stripos($ua, "YRSpider")) {
		$browser = "云壤蜘蛛";
	}
	elseif(stripos($ua, "Yeti") !== false) {
		$browser = "Naver蜘蛛";
	}
	elseif(stripos($ua, "Maxthon")) {
		if (stripos($ua, "AppleWebKit")) {
			$browser = "遨游浏览器(极速模式)";
		}
		elseif(stripos($ua, "Trident")) {
			$browser = "遨游浏览器(兼容模式)";
		}
		elseif(stripos($ua, "MAXTHON 2.0")) {
			$browser = "遨游浏览器2.0";
		}
	}
	elseif(stripos($ua, "Firefox")) {
		$browser = "火狐浏览器";
	}
	elseif(stripos($ua, "Opera") == 0 && stripos($ua, "Presto")) {
		$browser = "Opera";
	}
	elseif(stripos($ua, "BIDUBrowser")) {
		if (stripos($ua, "Trident")) {
			$browser = "百度浏览器(兼容模式)";
		}
		elseif(stripos($ua, "AppleWebKit")) {
			$browser = "百度浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "Ruibin")) {
		$browser = "瑞影浏览器";
	}
	elseif(stripos($ua, "qihu theworld")) {
		if (stripos($ua, "Trident")) {
			$browser = "世界之窗浏览器";
		}
		elseif(stripos($ua, "AppleWebKit")) {
			$browser = "世界之窗浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "MetaSr")) {
		if (stripos($ua, "Trident")) {
			$browser = "搜狗高速浏览器(兼容模式)";
		}
		elseif(stripos($ua, "AppleWebKit")) {
			$browser = "搜狗高速浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "LBBROWSER")) {
		if (stripos($ua, "Trident")) {
			$browser = "猎豹浏览器(兼容模式)";
		}
		elseif(stripos($ua, "AppleWebKit")) {
			$browser = "猎豹浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "YLMFBR")) {
		$browser = "115浏览器";
	}
	elseif(stripos($ua, "QQBrowser")) {
		if (stripos($ua, "Trident")) {
			$browser = "QQ浏览器(兼容模式)";
		}
		elseif(stripos($ua, "AppleWebKit")) {
			$browser = "QQ浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "TencentTraveler")) {
		$browser = "腾讯TT浏览器";
	}
	elseif(stripos($ua, "TaoBrowser")) {
		if (stripos($ua, "Trident")) {
			$browser = "淘宝浏览器(兼容模式)";
		}
		elseif(stripos($ua, "AppleWebkit")) {
			$browser = "淘宝浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "CoolNovo")) {
		$browser = "枫树浏览器";
	}
	elseif(stripos($ua, "SaaYaa")) {
		$browser = "闪游浏览器";
	}
	elseif(stripos($ua, "360SE")) {
		$browser = "360安全浏览器";
	}
	elseif(stripos($ua, "360EE")) {
		if (stripos($ua, "Trident")) {
			$browser = "360极速浏览器(兼容模式)";
		}
		elseif(stripos($ua, "AppleWebkit")) {
			$browser = "360极速浏览器(极速模式)";
		}
	}
	elseif(stripos($ua, "Konqueror")) {
		$browser = "Konqueror";
	}
	elseif(stripos($ua, "Chrome")) {
		$browser = "谷歌浏览器";
	}
	elseif(stripos($ua, "Safari")) {
		$browser = "Safari";
	}
	elseif(stripos($ua, "MSIE")) {
		$ver = explode(";", substr($ua, stripos($ua, "MSIE") + 5, 4));
		$ver = $ver[0];
		$browser = "IE ".$ver;
	}
	elseif(stripos($ua, "UCWEB")) {
		$browser = "UCWEB浏览器";
	}
	elseif(stripos($ua, "WAP")) {
		$browser = "Mobile浏览器";
	} else {
		$browser = $ua;
	}
	if ($browser == '') $browser = $ua;
	return $browser;
}
/*取得操作系统版本*/
function os($ua) {
	$os = "";
	if (stripos($ua, "Googlebot")) {
		$os = "谷歌蜘蛛";
	}
	elseif(stripos($ua, "Baiduspider") !== false) {
		$os = "百度蜘蛛";
	}
	elseif(stripos($ua, "Yahoo!") !== false) {
		$os = "雅虎蜘蛛";
	}
	elseif(stripos($ua, "bingbot")) {
		$os = "必应蜘蛛";
	}
	elseif(stripos($ua, "YRSpider")) {
		$os = "云壤蜘蛛";
	}
	elseif(stripos($ua, "Yeti") !== false) {
		$os = "Naver蜘蛛";
	}
	elseif(stripos($ua, "Windows NT")) {
		switch (substr($ua, stripos($ua, "Windows NT") + 11, 3)) {
			case 5.0:
				$os = "Windows 2000";
				break;

			case 5.1:
				$os = "Windows XP";
				break;

			case 5.2:
				$os = "Windows 2003";
				break;

			case 6.0:
				$os = "Windows Vista/2008";
				break;

			case 6.1:
				$os = "Windows 7";
				break;

			case 6.2:
				$os = "Windows 8";
				break;

			default:
				$os = "Windows";
				break;

		}
		if (stripos($ua, "WOW64")) {
			$os.= "(X64)";
		} else {
			$os.= "(X86)";
		}
	}
	elseif(stripos($ua, "Android")) {
		$os = substr($ua, stripos($ua, "Android"), 11);
	}
	elseif(stripos($ua, "Linux")) {
		if (stripos($ua, "i686")) {
			$os = "Linux X86";
		} else {
			$os = "Linux";
		}
		if (stripos($ua, "X11")) {
			$os.= "(X Window)";
		}
	}
	elseif(stripos($ua, "Macintosh")) {
		$os = "Mac";
	}
	elseif(stripos($ua, "IOS")) {
		$os = "iOS";
	}
	elseif(stripos($ua, "ZTE")) {
		$os = "ZTE";
	}
	elseif(stripos($ua, "Windows 98")) {
		$os = "Windows 98";
	} else {
		$os = "未知系统";
	}
	return $os;
}


echo  "当前浏览器：".browser($useragent);
echo "当前操作系统：".os($useragent);


?>