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【www.gdgbn.com--js教程】
搜索引擎的蜘蛛访问网站是通过远程抓取页面来进行的，我们不能使用JS代码来取得蜘蛛的Agent信息，但是我们可以通过image标签，这样我们就可以得到蜘蛛的agent资料了，通过对agent资料的分析，就可以确定蜘蛛的种类、性别等因素，我们在通过数据库或者文本来记录就可以进行统计了。
数据库结构：
#
# 表的结构 `naps_stats_bot`
#
CREATE TABLE `naps_stats_bot` (
`botid` int(10) unsigned NOT NULL auto_increment,
`botname` varchar(100) NOT NULL default "",
`botagent` varchar(200) NOT NULL default "",
`bottag` varchar(100) NOT NULL default "",
`botcount` int(11) NOT NULL default "0",
`botlast` datetime NOT NULL default "0000-00-00 00:00:00",
`botlasturl` varchar(250) NOT NULL default "",
UNIQUE KEY `botid` (`botid`),
KEY `botname` (`botname`)
) TYPE=MyISAM AUTO_INCREMENT=9 ;
#
# 导出表中的数据 `naps_stats_bot`
#
INSERT INTO `naps_stats_bot` VALUES (1, "Googlebot", "Googlebot/2.X ( http://www.googlebot.com/bot.html)", "googlebot", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (2, "MSNbot", "MSNBOT/0.1 (http://search.msn.com/msnbot.htm)", "msnbot", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (3, "Inktomi Slurp", "Slurp/2.0", "slurp", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (4, "Baiduspider", "Baiduspider ( http://www.baidu.com/search/spider.htm)", "baiduspider", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (5, "Yahoobot", "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)", "slurp", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (6, "Sohubot", "sohu-search", "sohu-search", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (7, "Lycos", "Lycos/x.x", "lycos", 0, "0000-00-00 00:00:00", "");
INSERT INTO `naps_stats_bot` VALUES (8, "Robozilla", "Robozilla/1.0", "robozilla", 0, "0000-00-00 00:00:00", "");
PHP程序：
error_reporting(E_ALL & ~E_NOTICE);
function get_naps_bot()
{
$useragent = strtolower($_SERVER["HTTP_USER_AGENT"]);
if (strpos($useragent, "googlebot") !== false){
return "Googlebot";
}
if (strpos($useragent, "msnbot") !== false){
return "MSNbot";
}
if (strpos($useragent, "slurp") !== false){
return "Yahoobot";
}
if (strpos($useragent, "baiduspider") !== false){
return "Baiduspider";
}
if (strpos($useragent, "sohu-search") !== false){
return "Sohubot";
}
if (strpos($useragent, "lycos") !== false){
return "Lycos";
}
if (strpos($useragent, "robozilla") !== false){
return "Robozilla";
}
return false;
}
$tlc_thispage = addslashes($_SERVER["HTTP_USER_AGENT"]);
//添加蜘蛛的抓取记录
$searchbot = get_naps_bot();
if ($searchbot) {
$DB_naps->query("UPDATE naps_stats_bot SET botcount=botcount 1, botlast=NOW(), botlasturl="$tlc_thispage" WHERE botname="$searchbot"");
}
?>