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Content Management System

Content Management System is a system used to manage the content of a web site. Content management systems are deployed primarily for interactive use by a potentially large number of contributors. Content Management means web content Management.
The content managed in this application includes computer files, image media, audio files, electronic documents and web content. The theme behind a CMS is to make these files available inter-office, as well as over the web. A Content Management System would most often be used as an archive as well.

CMS would be used to store files in a non-proprietary form. This application can be used to share files with ease, as most systems use server-based software, even further broadening file availability. This application includes a feature for web content, and some have a feature for a workflow process.
This application facilities the organization, control, and publication of a large body of documents and other content, such as images and multimedia resources. A web content management system is a content management system with additional features to ease the task requires publishing web content to web sites.

A Content Management System (CMS) is a combination of large database, File System, and other related software modules which are used to store and later retrieve huge amounts of data. At the company level, Content management systems (CMS) store and manage an organizations electronic document and Web content so that the employee of the company can reuse the information across different applications. The core application of the CMS is to manage content during its entire lifecycle i.e. from creation through publishing. A CMS allows non-technical authors and editors to easily and quickly publish their content which is otherwise done by technical programmers. By using these facilities, the company can save the time for training, while facilitating more people to publish.

The Web Content Management System (Web CMS) is content management system software, implemented as a Web application, for creating and managing HTML content. It is used to manage and control a large, dynamic collection of Web material (HTML documents and their associated images). The Web CMS facilitates content creation, content control, editing, and many essential Web maintenance functions.
The software provides authoring tools designed to allow users with little or no knowledge of programming languages or markup languages to create and manage content with relative ease of use.
The systems use a database (MySql) to store content, metadata, and/or artifacts that might be needed by the system. Content is stored as XML, to facilitate reuse and enable flexible presentation options.]
The presentation layer displays the content to regular Web-site visitors based on a set of templates.
Administration is done through browser-based interfaces.
Unlike Web-site builders like Microsoft FrontPage or Adobe Dreamweaver, the Web CMS allows non-technical users to make changes to an existing website with little or no training.

The Web CMS can be developed using PHP and MySql

The most expensive component of any website is content maintenance. Keeping your site up-to-date is essential: A web site with stale content is useless to customers, dropped by search engines, and an all-around bad investment. But fresh, timely content means constant updates, and that’s expensive. Do you hire outside designers to make simple updates, or send your own staff to training courses? Both options are costly. Another, better answer is a Content Management System, or CMS. A well-implemented CMS lets you control your site’s content, without learning HTML. But these systems come in many shapes and sizes. What is a CMS? What type of CMS do you need? How much should it cost? In this article, I’m going to try to shed some light on what has become a very, very crowded field, and provide you with guidelines for selecting — and making the most of — a CMS. First, you need to understand what a CMS does, and what it can do for your organization. What Is a CMS? Software does not a CMS make. There’s a lot more to a successful CMS than a CD-ROM and a few thousand lines of code. Then what is a Content Management System? A piece of software you buy, just like a word processor? A combination of software and hardware? In the real world, a CMS is a combination of three things:

PHP: Hypertext Preprocessor, is a widely used, general-purpose scripting language that was originally designed for web development, to produce dynamic web pages. PHP is the widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. All types of open source PHP code and applications are available on Open Source Scripts.

PHP: Hypertext Preprocessor is a widely used, general-purpose scripting language that was originally designed for web development to produce dynamic web pages. For this purpose, PHP code is embedded into the HTML source document and interpreted by a web server with a PHP processor module, which generates the web page document. As a general-purpose programming language, PHP code is processed by an interpreter application in command-line mode performing desired operating system operations and producing program output on its standard output channel. It may also function as a graphical application. PHP is available as a processor for most modern web servers and as standalone interpreter on most operating systems and computing platforms.

PHP Documentation Framework

The PHP documentation is written in XML using the DocBook DTD. If you would like to contribute to the PHP documentation project, you need to at least know the very basics of XML and DocBook.

The XML files are stored on a central server, and can be reached with a SVN client. There are many SVN clients you can use, although we recommend one command line tool or a proven WYSIWYG tool.

You will need more programs and tools to manipulate the XML files and test their content for errors. The tools you need depend on the operating system you use. Linux or some sort of Unix is recommended, although many things in phpdoc work on Windows. You will find more information about the tools you need in the tools section. 

MySQL is a database.

The data in MySQL is stored in database objects called tables.

A table is a collection of related data entries and it consists of columns and rows.

Databases are useful when storing data into server. A company may have a database with the following tables: "Employees", "Products", "Customers" and "Orders".

Basic object-oriented programming functionality was added in PHP 3 and improved in PHP 4. Object handling was completely rewritten for PHP 5, expanding the feature set and enhancing performance. In previous versions of PHP, objects were handled like value types. The drawback of this method was that the whole object was copied when a variable was assigned or passed as a parameter to a method. In the new approach, objects are referenced by handle, and not by value. PHP 5 introduced private and protected member variables and methods, along with abstract classes and final classes as well as abstract methods and final methods. It also introduced a standard way of declaring constructors and destructors, similar to that of other object-oriented languages such as C++, and a standard exception handling model. Furthermore, PHP 5 added interfaces and allowed for multiple interfaces to be implemented. There are special interfaces that allow objects to interact with the runtime system. Objects implementing ArrayAccess can be used with array syntax and objects implementing Iterator or IteratorAggregate can be used with the foreach language construct. There is no virtual table feature in the engine, so static variables are bound with a name instead of a reference at compile time.