It is more or less a full site script. You login to an admin panel, where you can add new pages, change the look of the site (globally), or change/add users.
As for saying hello:
<?php
echo "Hello world!";
?>
<?
class skin {
function sheader($title) {
print <<<EOF
<html>
<head>
<title>{$title}</title>
<style type="text/css">
<!--
body {
bgcolor: black;
color: white;
}
//-->
</style>
</head>
<body>
EOF;
}
function body($text) {
print <<<EOF
$text
</body>
</html>
EOF;
}
}
$skin = new skin;
$skin->sheader("Hello");
$body = "Welcome to my page. This is a very basic introduction to classes (no real \"constructor\")" . " Since this is a \"test\", you'll notice that it is very limited in functionality. But, I hope that my skills will improve soon.";
$skin->body($body);
?>