PHP is a server-side language, meaning that the code is executed on the server rather than on the user's local machine. Because of this, it doesn't matter what platform the user is using.
In simple terms:
User opens their browser -> Browser sends request to server -> Server executes code -> Output is sent back to the browser
PHP is a technology in itself and like JAVA it is open source and platform independent. It has got its own interpreter. So as long as you have a LAMP server you need not worry about the os system
There is always scope for open-source & platform independent technologies. Rest assured, it won't go extinct anytime soon.
LAMP stands for Linux-Apache-MySQL-PHP. In simpler terms it contains everything to build a php application on a linux platform.
PHP is powerful language platform to develop dynamic, functional website. PHP is more preferable for eCommerce Web Development.
PHP is a cross platform programming language, it is (in theory) available on any operating system.
IS Seq file also platform independent or dependent?
Yes. no .net is not platform independent is supports on OS .... as is need clr for Linux to support it but till now .net platform is not independent ...
No, they must be designed for specific platforms. The compiled programs are platform-independent.
It depends on personal choice. The reason PHP is used so extensively is probably cause it is platform independent, open-source, syntax is simple, it supports language interoperability through xml & json and a lot of frameworks and cms are available that too free of cost.
PHP is used for creating web portals, Websites, E-commerce Platform , CMS , ERP Systems, Web Services created in PHP are used in Android Applications.
There are currently two ways of developing stand alone PHP applications. Both options are only available for Windows platforms (XP and Greater). PHP-GTK is a development that utilizes the GTK visual interface platform and allows developers to create glade interfaces. WinBinder is another development that binds PHP natively into the Windows platform.
Platform dependent requires the application to be run on specific hardware. independent will run on many kinds of hardware.