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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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