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啥是机器人!该如何解决

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Release: 2016-06-13 12:10:34
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啥是机器人!

本帖最后由 discuz2015 于 2014-11-27 15:29:48 编辑
define('ISROBOT', getrobot());<br />if(defined('NOROBOT') && ISROBOT) {<br />	exit(header("HTTP/1.1 403 Forbidden"));<br />}<br />
Copy after login

上面这段代码,据说是防止机器人访问的,我不理解哪里代表是机人呢

判断机器人的函数是这么写的,这里面有啥玄机吗
function getrobot() {<br />	if(!defined('IS_ROBOT')) {<br />		$kw_spiders = 'Bot|Crawl|Spider|slurp|sohu-search|lycos|robozilla';<br />		$kw_browsers = 'MSIE|Netscape|Opera|Konqueror|Mozilla';<br />		if(preg_match("/($kw_browsers)/", $_SERVER['HTTP_USER_AGENT'])) {<br />			define('IS_ROBOT', FALSE);<br />		} elseif(preg_match("/($kw_spiders)/", $_SERVER['HTTP_USER_AGENT'])) {<br />			define('IS_ROBOT', TRUE);<br />		} else {<br />			define('IS_ROBOT', FALSE);<br />		}<br />	}<br />	return IS_ROBOT;<br />}
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------解决思路----------------------
Bot
------解决思路----------------------
Crawl
------解决思路----------------------
Spider
------解决思路----------------------
slurp
------解决思路----------------------
sohu-search
------解决思路----------------------
lycos
------解决思路----------------------
robozilla
是正则要匹配的模式
Bot,Spider...都是蜘蛛的标识,一般的搜索引擎都会写
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