spider scraper

PHP/** * to determine if search engine spider * * @access public * @return String*/functionIs_spider ($record=true){ Static $spider=NULL; if($spider!==NULL) { return $spider; } if(Empty($_server[' Http_user_agent '])) { $spider= ' '; return‘‘; }

1. The code must be simplified.As we all know, spider crawls the source code of the webpage, which is different from what we see in our eyes. If your website is filled with codes that cannot be recognized by spider such as js and iframe, it is like the food in this restaurant is not what you like and it does not suit your taste, so how many times have you gone, will you go back? The answer is No. Therefore,

spiders for the average person may be a more annoying animal, it can make your house is full of nets, accidentally may also network your face. But for our webmaster, spiders are our online money-making parents. Of course, this spider is not the spider, we talked about this spider is a search engine dedicated to crawling the Internet data program. We all know that

1: What is a spider pondSpider pools are divided into bridge pages and Sitemaps. Bridge page for single page template inside all point to external link label A bridge page is usually the software that automatically generates a large number of pages containing keywords, and then automatically turns to the homepage from those pages. The goal is to hope that these different keywords as the goal of the bridge page in the search engine to get a good rankin

The current website optimization, search engine more and more stringent, Baidu Spider also become more and more intelligent. Our website develops well or is bad, the traffic is many or few, before or after the high income or meager, by the Baidu Spider on your site's loyalty, your site if the charm can be attracted to spiders every day and include your website information, then your site development prospec

How can I accurately determine whether a request is a request sent by a search engine crawler (SPIDER ?, Search engine Crawler Websites are often visited by various crawlers. Some are search engine crawlers, and some are not. Generally, these crawlers have UserAgent, and we know that UserAgent can be disguised, userAgent is essentially an option setting in the Http request header. You can set any UserAgent for the request by programming. Therefore, us

We can judge whether it is a spider by http_user_agent, the spider of search engine has its own unique symbol, the following list takes part. functionIs_crawler () {$userAgent=Strtolower($_server[' Http_user_agent ']); $spiders=Array( ' Googlebot ',//Google crawler' Baiduspider ',//Baidu Crawler' Yahoo! slurp ',//Yahoo crawler' Yodaobot ',//Youdao crawler' MSNBot '//Bing Crawler//More crawler keyword

This article mainly introduces PHP code summary for determining whether a visitor is a search engine spider or a common user. There are always a variety of methods suitable for you to prevent search engine spider from dragging the search engine to death. This article mainly introduces PHP code summary for determining whether a visitor is a search engine spider or