HelloWorld.php

AutoLoader.php should be included in any top level scripts. If the URL in the browser address bar is your script, it's a top level script. No other includes are necessary. AutoLoader will include other classes as needed.

body_content() draws the page. Methods from BasicPage provide the standard input box at the top and footer at the bottom. DisplayLib::boxMsg() is a utility function that puts the 'Hello World' message in a standard message box.

preprocess() handles input. In this case any form input causes a redirect to the main display script.

Note the very last line creating an object. That's necessary to actually display anything.

<?php

include_once(dirname(__FILE__).'/../lib/AutoLoader.php');

class HelloWorld extends BasicPage {

        function body_content(){
                $this->input_header();

                echo '<div class="baseHeight">';
                echo DisplayLib::boxMsg('<b>Hello World!</b><br />
                        Enter anything to continue');
                echo '</div>';

                $this->footer();
        }

        function preprocess(){
                if (isset($_REQUEST['reginput'])){
                        header("Location: {$this->page_url}gui-modules/pos2.php");
                        return False;
                }

                return True;
        }

}

new HelloWorld();

?>