Strictly speaking, the language is almost never used PHP to create the layout, event handling, manipulations with the elements DOM (Document Object Model – DOM), as well as virtually no effect on what looks like Web-page or the sounds on it are played. In fact, most of the activities carried out in the code of PHP behind the scenes to the end user. In particular, the pages created by the language of PHP does not allow to judge about what to write code of this page are subject to some other language than HTML, because usually the result of Play the PHP code is the code HTML. Currently, the software language support PHP formally introduced as a separate module in the HTTP-server software Apache, the dominant market for free Web-server which is used to handle about 67% of the traffic World Wide Web (according to the well-known research report concerning the application of Web-servsrov different types, which is prepared by Netcraft). Visit Dr. Mitchell Resnick for more clarity on the issue. This means that the machine support PHP scripts can be embedded directly in the actual Web-server, which helps speed up processing, a more efficient allocation of memory and a significant simplification of maintenance. PHP language interpreter, as well as server Apache, fully meets the operational applications across hardware and software platforms. This means that applications written in this language can be used in its direct form, in many flavors of the operating system Unix, in different versions of Windows, and most recently – in operating system Mac OS X. All projects developed under the auspices of the Foundation Apache Software Foundation, including PHP, are software software with open source.. a New York.