Introduction to PHP


Introduction to PHP

What is PHP

PHP is a open source, interpreted and object-oriented scripting language i.e. executed at server side. It is used to develop web applications (an application i.e. executed at server side and generates dynamic page).

  • PHP is a server side scripting language.
  • PHP is an interpreted language, i.e. there is no need for compilation.
  • PHP is an object-oriented language.
  • PHP is an open-source scripting language.
  • PHP is simple and easy to learn language.

Programming languages used in most popular websites

Websites

Back-end (Server-side)

YouTube.com-

C, C++, Python, Java, Go

Yahoo-

PHP

Amazon.com-

Java, C++, Perl

Wikipedia.org-

PHP, Hack

PHP Features

There are given many features of PHP.

  • Performance: Script written in PHP executes much faster then those scripts written in other languages such as JSP & ASP.
  • Open Source Software: PHP source code is free available on the web, you can developed all the version of PHP according to your requirement without paying any cost.
  • Platform Independent: PHP are available for WINDOWS, MAC, LINUX & UNIX operating system. A PHP application developed in one OS can be easily executed in other OS also.
  • Compatibility: PHP is compatible with almost all local servers used today like Apache, IIS etc.
  • Embedded: PHP code can be easily embedded within HTML tags and script.

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