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#PHP








              Today, we use various websites which accept data like name, address, etc. from us and return the result
              accordingly. Do you know how these websites accept data and return the result dynamically? This is
              possible due to the use of scripting languages. There are various scripting languages like JavaScript,
              Active Server Pages(JSP), ASP.NET, and PHP. Let us learn about PHP in detail.


                   PHP


              PHP  (Hypertext  Preprocessor) is a server side  scripting  language.  It  is  very popular  and  powerful
              language to develop dynamic web pages. It is freely available to use. It is embedded in HTML pages.
              The programs written in PHP are interpreted by a web server. So, we need to install a webserver before
              executing a PHP program.

              Installing a Web Server

              A web server is a program that executes a script and shows the output in a web browser. There are
              various web servers which allow to interpret the PHP programs and execute them. Some of the web
              servers are as Apache HTTP Server, WampServer, NGINX, etc. You can install any of the web servers to
              execute a PHP script.

              XAMPP is one of the most commonly used application packages that is a combination of a web server
              and required libraries to run a PHP script. It is a cross-platform environment where you can execute
              your PHP scripts. You can download XAMPP application from the following link:

              https://www.apachefriends.org/download.html
              After installing XAMPP, start the the Apache HTTP Server. Now you can execute your PHP scripts.


                   CREATING AND RUNNING A PHP SCRIPT


              Before writing the first PHP script, you need to know how to add a PHP script into an HTML document.
              A PHP script is added to an HTML document with the help of PHP start tag <?php and end tag ?>. The
              syntax is as follows:

              <?php

              //PHP code

              ?>
               After adding the PHP script, save the file with .php extension.





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