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alled, it generates output for those programmed sections, and so the user sees a normal Web page and does not see any of the progr amming code that generated parts of the page. Client and Server A server is a computer, or program that holds resources, or provid es services, that other computers want. The other computers that want resources or services from the server are called clients. Th e client always initiates contact and the server can only sit and wait for incoming requests. The client sends a request and the s download books erver replies with a response that delivers the required resource or service. Web Pages Web pages reside on a server. The Web brow ser is a client. When a user enters the address of a page in the address box of the browser, the browser fetches that page from th Bio Limousin Moteur de recherche e Web server and displays it. A session might involve a sequence of events. For example, on a page selling items, the user may bui .

ous pages. This is called ��stateless�� communication. Stateless communication presents a problem for Web pages that need to conne ct together events occurring on different Web pages. Sessions and cookies resolve this problem. Differences As cookies are held on the client computer, they are open to alteration by the user. A session is a file held on the server and can be referred to again when a user logs back in. This makes sessions more secure than cookies. Also, the maximum size of a cookie is dictated by the bro free website design wser. The session file has no limitation. Some organizations use a cluster of servers performing the same service. Arriving reques ts are directed to a server selected at random. In this configuration, cookies are a better option for storing data between connec Bio Limousin Moteur de recherche tions. There is no guarantee that the client will be connected to the same server again, and so access to the session file will no .

into the Web server via an SSH session to access a command prompt. 4 Type the command mkdir php-nuke to create the directory you w ill install PHP-Nuke into. 5 Type the command tar -xvf PHP-Nuke-version .tar.gz -C php-nuke to extract the contents of the PHP-Nuk e archive into the php-nuke directory. Set Up 6 Type the command cd php-nukesql to navigate into the PHP-Nuke sql directory. 7 Typ e the commandadmin create phpnuke to create a database called phpnuke. 8 Type the command phpnuke nuke.sql to create the tables r leather texture equired for PHP-nuke. 9 Type the command cd .. to return to the main php-nuke directory. Configure PHP-Nuke 10 Type the command ch mod 666 * to set the file permissions to read and write for all users. 11 Type the command chmod 777 html sql to set the file perm Bio Limousin Moteur de recherche issions to read, write and execute for all users. 12 Type the command vi htmlconfig.php to open the config.php file in the Vi text .

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