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C # It is particularly suitable for building spider Program This is because it already has built-in HTTP access and multithreading capabilities, and these two capabilities are very critical for Spider programs. The following are the key issues to be addressed when constructing a Spider Program: (1) HTML analysis: an HTML Parser is required to analyze every p
Search engine spider is a search engine itself a program, it is the role of the Web site to visit, crawl the text of the page, pictures and other information, set up a database, feedback to the search engine, when the user search, the search engine will collect the information filtered, The complex sorting algorithm presents what it considers to be the most useful information for the user. In-depth analysis of the site's SEO performance, the general w
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
Compile reliable multi-threaded spider programs Thursday, 24. August 2006, 05:52:14 Technology[This topic is used for discussion with friends in the QQ group [17371752] "search engine, data, and spider 〕 1. What does the Spider Program look like? Spider programs are one of the most critical background programs in sear
Spider is a required module for search engines. The results of spider data directly affect the evaluation indicators of search engines. The first Spider Program was operated by MIT's Matthew K gray to count the number of hosts on the Internet. > Spier definition (there are two definitions of spider: broad and narrow ).
The implementation process is as follows: 1. Determine the browser type of the Client 2. Determine whether a user is a spider based on the search engine robot name /*** Determine whether it is a search engine spider ** @ access public * @ return string */function is_spider ($ record = true) {static $ spider = NULL; if ($ spi
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
C # is particularly suitable for constructing spider programs because it has built in HTTP access and multithreading capabilities, and these two capabilities are critical for Spider programs. The following are the key issues to be addressed when constructing a Spider Program:(1) HTML analysis: an HTML Parser is required to analyze every page that a
of this article)Purpose: a public network IP (this example is assumed to be 200.200.200.9), 3 virtual devices share the InternetSystem Environment: VMWare Esxi 5.5Software Environment: Sea Spider soft Route (v6.1.5),VMWare vSphere Client 5.5, operating system mirroringDetailed steps:1. Install and configure VMware EsxiThe hardware environment can use VMware Workstation[1], provided that the PC preferably has more than 8G of memory, if the conditions
We must all know, Baidu Spider robot to crawl your site number, far greater than the amount of collection, then what is the relationship between them, today we will talk about. I. Preliminary period At this point in my preliminary period, refers to the Web site opened to the one weeks after the submission of Baidu, in this one-week, Baidu Spider machine People's activities are such, first of all, Baidu rob
As mobile traffic is increasing, we statistics website traffic time, need to move and PC traffic separate, and encounter Baidu Spider time, in order to better and more detailed statistics, also need to Baidu Spider mobile end and PC side separately to statistics, this to the website analysis has very important significance. This article provides a judge Baidu Mobile Spi
If the search engine does not have a good tour of the content of our site, then we even invest in the site of how much energy is naught. The best way to avoid this is to be able to fully plan the structure of our entire site. First, we begin to build our site before, we need to go to a good analysis of search engine crawling patterns and laws, because we know that search engine is the use of "spiders" crawling our site source code to crawl links, so good to collect our site page, so that wareho
High-quality web sites, usually have a performance: content included in time, to protect the original content in a timely manner indexed to the search engine, on the other hand in the Instant messaging Internet, but also for the site to bring an unpredictable flow of opportunity. Therefore, the content of the second collection has become a common aspiration in the process of building a station. Although some say, the new station can also be a second, but how many people can guarantee the new sta
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
1, recommended a method: PHP Judge search engine Spider crawler or human access code, from Discuz x3.2 The actual application can be judged in this way, directly not the search engine to perform the operation 2. The second method: Using PHP to implement Spider access log statistics $useragent = Addslashes (Strtolower ($_server[' http_user_agent ')); if (Strpos ($useragent, ' Googlebot ')!== false) {$bot
Today, I will share with you about the search engine spider. We all know that all the pages on the Internet are crawled by Spider. In fact, spider is a code program. When a new page is generated on the Internet, the spider will crawl. Because the Internet generates hundreds of billions of pages every day, a single
Brief introductionThis article introduces Linux/nginx how to view search engine spider crawler behavior, clear spider crawling situation to do SEO optimization has a lot of help. A friend you need to learn through this articleSummarySEO optimization of the first step of the site is to make spider crawlers often come to your site to patronize, the following Linux
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