what is robots txt file

I have been emphasizing the details of the optimization, is now the site of Baidu's requirements is to see your details do well, code, tags and so on have the details, then the robots are also part of the site details, do a good job he has a great

Robots.txt GuideWhen a search engine accesses a Web site, it first checks to see if there is a plain text file called robots.txt under the root domain of the site. The Robots.txt file is used to limit the search engine's access to its Web site,

SEO (Search Engine Optimization) Many programmers are doing this, but hackers are still not willing to do it! The technical staff firmly believe that the technology will speak. If the user experience is good, it can truly bring users the resources

Simple reference to fopen functionsThe fopen () function opens a file or URL.If opening fails, this function returns FALSE.SyntaxFopen (filename, mode, include_path, context)Instance 1Example of creating a file: The code is as follows:Copy code

Below we use several examples to summarize the use of the php fopen function to implement file read and write operations. If you need to learn, refer. Simple reference to fopen Functions The fopen () function opens a file or URL. If opening fails,

About the syntax and function of robots. txt As we know, search engines all have their own "Search robots" and use these robots to link on the Web page over the network (generally HTTP and SRC links) constantly crawl data to build your own database.

Below we use several examples to summarize the use of the phpfopen function to implement file read and write operations. if you need to learn, refer. For a simple reference, refer to the fopen function fopen () function to open a file or URL. If

First, create the folder indexdocs and three TXT files in the path E: \ testlucene \ workspacese: l1.txt,l2.txt,l3.txt. L1.txt content: 111111111111111111111111111111111111111111111111111111111111111111111111111Information retrieval is to find

Some ways to prevent SQL injection attacksSQL injection attacks are a great danger. Before explaining its prevention, it is important for database administrators to understand the rationale behind their attacks. This facilitates the administrator to

When the index is in the root directory, you can create a. htaccess file in the root directory where index. php is located and use the following code: RewriteEngineonRewriteCond $1! ^ (Index. php | robots.txt) RewriteRule ^ (. *) $ index. php? $1 [L]