我们可以通过读取HTTP_USER_AGENT来判断请求,从而做到屏蔽页面抓取。

国内一些蜘蛛的UA:

$spiders = array(
‘Googlebot’,
‘Baiduspider’,
“Sogou web spider”,
“360Spider”,
“YisouSpider”,
“Sosospider”,
“YoudaoBot”,
‘Yahoo! Slurp’,
‘EasouSpider’,
‘bingbot’
);

模板兔给出大致的代码供参考:

$ua = $_SERVER['HTTP_USER_AGENT'];    //将恶意USER_AGENT存入数组    $now_ua = array('FeedDemon ','BOT/0.1 (BOT for JCE)','CrawlDaddy ','Java','Feedly','UniversalFeedParser','ApacheBench','Swiftbot','ZmEu','Indy Library','oBot','jaunty','YandexBot','AhrefsBot','MJ12bot','WinHttp','EasouSpider','HttpClient','Microsoft URL Control','YYSpider','jaunty','Python-urllib','lightDeckReports Bot');    //禁止空USER_AGENT,dedecms等主流采集程序都是空USER_AGENT,部分sql注入工具也是空USER_AGENT    if(!$ua) {  header("Content-type: text/html; charset=utf-8");    die('禁止爬取');    }else{  foreach($now_ua as $value ){    //判断是否是数组中存在的UA    if(strpos($ua,$value) !== false){  header("Content-type: text/html; charset=utf-8");    die('禁止爬取');    }  }    }
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