rita123;10908893 wrote:
1)Why is php3,php4 or php 5 used?
2)IS that we cannot write php code without those php3or php4or php5 installations??
3)Please tell me how to execute the program after typing the syntax in notedpad?
1) they're different Versions of php.. just like Windows 2000, Windows XP, Vista, 7.. used to execute/handle/interpret php
2) you can write all the php code you want, but you need php installed on your server (local or remote) to execute it
3) put the .php file on the server & navigate to your browser to it.
you obviously know absolutely nothing about php, take a look at the links/resources below that are meant to help people just like you,
php tutorials for beginners
php manual
amazon php books
w3schools PHP Tutorial