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Postfix implements simple configuration of mail sending 1 install postfix. Use rpm-qa postfix to check whether postfix is installed. If no, use yum install postfix. 2 Configure/etc/postfix/main. cf [root @ reage ~] # Vim/etc/postfix/main. cf

Regular Expression matching of nginx forwarding rules, where :*~ Case-sensitive matching *~ * Case-insensitive matching *!~ And !~ * These are case-insensitive and case-insensitive Files And Directories. *-f and! -F is used to determine whether a

# JavaScript Summary# # syntax1. Case-sensitive2. Naming conventions1. The first letter must be the letter _ $2. Other characters can be numeric letters underlined $3. Avoid the system keywords4. Word and Word connection method recommended hump

First, the HTTP protocol conceptHypertext Transfer Protocol (Http,hypertext Transfer Protocol) is one of the most widely used network protocols on the Internet. All WWW documents must comply with this standard. HTTP was originally designed to

HTTP is an application-level object-oriented protocol, which is suitable for distributed hypermedia information System because of its convenient and fast way. Presented in 1990The main features of the HTTP protocol are summarized below1. Support

HTTP is an object-oriented protocol belonging to the application layer, which is suitable for distributed hypermedia information System because of its simple and fast way. It was proposed in 1990, after several years of use and development, has been

Network Transport ProtocolInetAddress classThe Socket class understands:Socket common methodsTCP-based socket programmingUDP-based socket programmingURL programmingSummarizeJava Network programmingJava is inherently a language that supports the Web.

Transferred from: http://www.cnblogs.com/li0803/archive/2008/11/03/1324746.htmlAuthor:jeffreyIntroduction                                          HTTP is an object-oriented protocol belonging to the application layer, which is suitable for

The last time I used the requests library to write a crawl page link in the simple code, extension, we can also use it to get our website PR and Baidu weight. The principle is similar. Finally, we can even write a loop to query the site of the bulk

This article mainly introduces the usage of several predefined variables $ _ SERVER in php. the instance summarizes common usage of the predefined variable $ _ SERVER on the SERVER, you can refer to the examples in this article to summarize the

This article mainly introduces the summary of PHP network operation functions. This article lists frequently used functions in networks such as gethostbyaddr, gethostbyname, header_remove, http_response_code, and ip2long, you can refer to checkdnsrr

PHP spoofs the referer instance code. The complete program is provided here. you can modify the specific application on your own. The example I provided here is very simple. In fact, many applications can be shown in this example. For example, the

Install phpMyAdmin. Many new users need to set up a MySQL User reasonably to implement the latter. they can only read and write the permitted databases. Wait until you have read the related sections in the MySQL manual. Many new users To implement

Page optimization and pseudo-static descriptions. Pseudo-static About page optimization and pseudo-static 1) layout optimization 2) pseudo-static (focuses on apache, smarty, and regular expressions) Details: I. layout optimization: Layout

How to obtain the PHP warning error message. The code is as follows :? Php *** UPDATE The invalid characters, send the zookeeper information *** @ author * @ copyright2009-06-10 * error_reporting (E_ERROR | E_WARNING | E_PA code is as follows: The

In-depth explanation of PHP asynchronous execution. When a Web server executes a PHP script, it sometimes takes a long time to return the execution result. the subsequent script takes a long time to continue execution. If you want to implement a

Encapsulation of database operations in PHP. In PHP, the encapsulation of database operations in the dynamic network design involves many database operations. However, sometimes other background databases are used as needed, A large number of

The complete program is provided here. you can modify the specific application on your own. The example I provided here is very simple. In fact, many applications can be shown in this example. Counterfeit referer instance code, mainly used to break

Kanwi.cn has a web server with a daily traffic of about 0.1 million. There are several virtual hosts on it. recently, Squid2.6 has been installed for WEB acceleration. Squid and Apache are both on the same server. The effect is very obvious, many

Php paging principle 1. first understand the limit usage in SQL statements SELECT * FROM table ...... Limit start position, number of operations (where the start position starts from 0) Example: Take the first 20 records: SELECT * FROM