PHP (Hypertext Preprocessor) is a open source programming language.

Used

1-Cross platform(Platform Independent)

2-HTML embeded

3-Server side

4-Webscripting language

1-Cross platform or Platform Independent-Most php code can be processed without alteration on computers running many different operating systems.

Example- A PHP script that run on linux generally also runs well on windows.

2-HTML embeded-PHP code can be written in files containing a mixture of php instructions and HTML code.

3-Server side-The PHP program are run on a server specifically a webserver.

4-Webscripting language-PHP program run via a webbrowser.