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    Writing First PHP Script

                     The echo statement is used in a PHP script to display the output on the web page. It can be used with
                     or without parenthesis. Let us write a PHP script to display Hello World! message. Perform the following
                     steps to create the script:
                     Step 1: Open Notepad and type the following code:

                     <HTML>

                     <HEAD> <TITLE> First PHP Script </TITLE> </HEAD>
                     <BODY>
                     <?php

                     echo "Hello World!";
                     ?>
                     </BODY>

                     </HTML>
                     Step 2: Save the file with the Hello.php name under the C:\xampp\htdocs folder.

                     Running a Script

                     Perform the following steps to run a script:

                                                                       Type the following URL in the Address
                                      Open a web browser.      1       bar: http://localhost/hello.php            2

                     The echo statement will display Hello World! on the web page. Note that every PHP statement should be
                     terminated with a semicolon. Ensure that the Apache HTTP Server should be running before executing
                     the script.

                     PHP KEYWORDS

                     PHP provides a set of keywords that are reserved words. They cannot be used as variable names, class
                     names or method names. Some of the keywords are as follows:

                             and                   as                 break                case                 catch
                             class               const              continue              default                do
                             echo                 else                elseif              endfor            endforeach

                             endif             endswitch            endwhile             extends                final
                            finally               for                foreach             function              global

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