PHP 5 Tutorial

PHP 5 Tutorial

 

PHP is a server scripting language, and is a powerful tool for making dynamic and interactive Web pages quickly.

PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP.





echo "My first PHP script!";
?> 

How Did HTML5 Get Started?

HTML5 is a cooperation between the World Wide Web Consortium (W3C) and the Web Hypertext Application Technology Working Group (WHATWG).

WHATWG was working with web forms and applications, and W3C was working with XHTML 2.0. In 2006, they decided to cooperate and create a new version of HTML.

Some rules for HTML5 were established:

• New features should be based on HTML, CSS, DOM, and JavaScript
• The need for external plugins (like Flash) needs to be reduced
• Error handling should be easier than in previous versions
• Scripting has to be replaced by more markup
• HTML5 should be device-independent
• The development process should be visible to the public

HTML5 Introduction

HTML5 is a mark up language used for structuring and presenting content for the World Wide Web and a core technology of the Internet. It is the fifth revision of the HTML standard (created in 1990 and standardized as HTML 4 as of 1997)^[] and, as of December 2012^[update], is a candidate recommendation of the World Wide Web Consortium (W3C). Its core aims have been to improve the language with support for the latest multimedia while keeping it easily readable by humans and consistently understood by computers and devices (web browsers, parsers, etc.). HTML5 is intended to subsume not only HTML 4, but also XHTML 1 and DOM Level 2 HTML.

Following its immediate predecessors HTML 4.01 and XHTML 1.1, HTML5 is a response to the fact that the HTML and XHTML in common use on the World Wide Web are a mixture of features introduced by various specifications, along with those introduced by software products such as web browsers, those established by common practice, and the many syntax errors in existing web documents.^[4] It is also an attempt to define a single markup language that can be written in either HTML or XHTML syntax. It includes detailed processing models to encourage more interoperable implementations; it extends, improves and rationalises the markup available for documents, and introduces markup and application programming interfaces (APIs) for complex web applications.

For the same reasons, HTML5 is also a potential candidate for cross-platform mobile applications. Many features of HTML5 have been built with the consideration of being able to run on low-powered devices such as smartphones and tablets. In December 2011, research firm Strategy Analytics forecast sales of HTML5 compatible phones will top 1 billion in 2013^.

Examples in Each Chapter

With our HTML editor, you can edit the HTML, and click on a button to view the result.









Results:

http://www.w3schools.com/html/tryit.asp?filename=tryhtml5_video_bear