webcrawler search

Google. Domestic representatives include "Skynet", Youyou, and OpenFind.3. meta-search engines: These types of search engines do not have their own data. Instead, they submit query requests to multiple search engines at the same time, and process the returned results repeatedly, such as sorting and sorting, return to the user as your own result. The se

catalog search engine is becoming more and more obvious with the growth of the network information. The need to search for information on the Internet has made research institutions engaged in machine search and companies that provide search services exceptionally prosperous after 1995. 3. Meta

tag. 　 Northern Light Northern Light began in August 1997, and its status is becoming more and more important. The page is important, the analysis ability of the Web page that uses the pattern frame design seems to be deficient. 　 Excite supports Web pages designed using a pattern framework, ignoring the contents of meta tags, but attaching importance to the page's rise. In addition, the importance of the factors outside the page, that is, the more links to the page outside the site, the

follows: function Is_spider () {$robot = 0;$USER _agent = strtolower ($_server[' http_user_agent ');if (Strpos ($USER _agent, "Bot")) $robot = 1;if (Strpos ($USER _agent, "spider")) $robot = 1;if (Strpos ($USER _agent, "slurp")) $robot = 1;if (Strpos ($USER _agent, "Mediapartners-google")) $robot = 1;if (Strpos ($USER _agent, "Fast-webcrawler")) $robot = 1;if (Strpos ($USER _agent, "AltaVista")) $robot = 1;if (Strpos ($USER _agent, "Ia_archiver")) $r

This document records the search spider that needs to be set in the robots.txt list of the world comparison. For details about how to set the directory that does not want to be indexed by the search engine, refer to the settings below.Of course, you can also set it from robots.txt.The following are famous search engine spider names:Google's spider: GooglebotB

Php+mysql database development similar to Baidu's search function: Chinese and English participle + full-text Search Chinese participle: A) Robbe php Chinese word extension: http://www.boyunjian.com/v/softd/robbe.htmlI. Robbe full version download: Robbe full version (PHP test program, Development help document, winnt DLL file under PHP) Download: Http://code.google.com/p/robbe ("Google" cannot be

This is a bit of trouble because I don't know much about PHP ... In fact, you can use PHP directly call all categories, I have used the most dishes of a ... Search can be based on your search keyword/word close to the extent of the number of lines ... Don't ask me if I want to change PHP without .... Nonsense does not say the code for everyone to see ... Just go back and change. 1.0">

Key word//ROOT1. Hey!!! // Objective: For example, you are writing a search interface, so that users can have more search options. The code is directly on my homepage copy down. And the page is combined so More ugly understand. Hehe: Here I use Access. Mine is like this, I have more than 10 tables, are stored in various classes of students published Article. So I set up a federated query in Access. The

Keyword class feature. Replaces the passed-in string as an expression following the SQL statement where keyword: Word search [For example: Xiaoming] Phrase Search Every word in a phrase will be retrieved For example: Xiao Qiang 1 nickname 1 small powerful small cockroach Logical Search Supports the and and OR operators. For example: Xiaoming and Xiao Qiang Co

From: http://blog.jobbole.com/73517/ Binary Search is one of the simplest but most effective algorithms for searching ordered arrays. The problem is,Can more complex algorithms be used better?Let's take a look at other methods. In some cases, it is not feasible to hash the entire dataset, or to query both the location and the data itself. At this time, the O (1) running time cannot be implemented by using a hash table. However, for ordered arrays, d

part of the site:User-agent: *Disallow:/Allow all robot to accessUser-agent: *Disallow:Or you can build an empty file: robots.txtProhibit all search engines from accessing several parts of the site (Cgi-bin, TMP, Private directory in the following example)User-agent: *Disallow:/cgi-bin/Disallow:/tmp/Disallow:/private/Prohibit access to a search engine (Badbot in the following example)User-agent:badbotDisal