PHP (HYPERTEXT PREPROCESSING)

- Used to Create dynamic and User friendly websites.

- Used to write a server side scripting.

- Scripts executed in webservers like Apache, Tomcat, IIS (Internet Information Service), etc.

- Support many databases, mainly MySQL.

- Opensource Software.

Extensions of PHP file:

* .php

* .php3

* .phtml

Why PHP:

Ø Runs in any Platform.

Ø Compatible with almost all servers used today.

Ø PHP is easy to learn and runs efficiently on sever side.

Commands used in PHP:

* print – Print in screen.

* Echo – Print in screen.

* hr (Inside <>) - Breaking lines with a horizontal line (Ruler).

* br (Inside <>) - Break Line.

* // - Making a line not to work.

* /* */ - Making multiple lines not to work.

Variables in PHP:

ü No quotes for numerical values.

ü Quotes for Characters.

Eg: