PHP Introduction and example

PHP Introduction and example | PHP tutorial

PHP (Hypertext Pre-processor) is a one of the important server side Web and general purpose scripting language invented by Rasmus Lerdorf in 1994.
It is very simple and lightweight open source server side scripting language.
It can easily embed with HTML and other client side scripting languages like CSS (Cascading Style Sheets) and Java script.
It also creates dynamic and interactive Webpages in the
real time Web development projects.

Client Server Architecture

Client server architecture is classified into three types, as follows
● Single Tier Architecture
● Two Tier Architecture
● N/Multi/Three tire architecture

server side Architecture

Web scripting languages are classified into two types, client side and server side scripting language.
PHP is completely different from Client side scripting language like Java script.
The PHP code entirely executes on Webserver which is installed in the remote machine and it is generating HTML code which is sent to the user.
The user receives the HTML code and sees the Website contents via Internet browser in their computer or laptop.
PHP also supports OOPs (Object Oriented Programing) concepts.
It is applicable to implement all OOPs features such as
class, object and inheritance etc.

PHP syntax

Three types of PHP Syntax are available. They are as follows
1. Default Syntax
2. Short open Tags
3. HTML Script embed Tags


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