PHP – language development software for the Web, written by Web developers and designers for Web. The very name PHP is a recursive acronym for PHP: Hypertext Preprocessor (hypertext preprocessor PHP). Originally this product was called Personal Home Page Tools, and many still believe that abboeviatura PHP stands for exactly. But since the first version of PHP the scope of this language has grown significantly, so by common consent the community PHP users adopted a new and more acceptable definition has become recursive, in the style of GNU – GNU's Noy Unix, or GNU – not Unix). currently used by fifth major version of PHP, which is abbreviated as RNR5, but may also denoted simply as PHP. PHP – a server-side scripting language that can be embedded in HTML code to deploy in the browser. Another use case scenarios in this language may provide them independent performance (but much more widely used option one).

This category also includes such software products are owned by separate companies, such as Active Server Pages (ASP) of Microsoft, ColdFusion, and Macromedia's Java Server Pages (JSP) from Sun. In Some journals programming language PHP is often called 'the language of ASP Open Source', because this software in its functionality is similar to software from Microsoft. But this wording is misleading, because the language of PHP has been developed earlier than ASP. And over the past few years the use of PHP and Java Server Tools expands, while the scope is narrowed using ASP, so the comparison becomes even more unacceptable. Technology to support server-side scripts are discussed in more detail in Chapter 2, and the study of this chapter is enough to be guided as the definition of server-side script aggregate superdeskriptorov HTML or small programs that run within Web-pages, but not in the browser and the server, before sending in your browser. For example, the PHP code you can use the HTML code to enter the general upper and lower headers and footers to all pages in your site or to store the data entered into the form in the database.