<?php
class page{
var $what;
var $text;
function tpl($what){
switch($what){
case 'header':
echo "<h1>Header</h1>";
//include header.html
break;

case 'body':
echo "<p><i>".$this->text."</i></p>";
break;

case 'footer':
echo "copyright &copy; blabalbalbla 2011";
break;

}

}
}

$page = new page();
$page->tpl("header");
$page->text="whazaaaaaaaaaaaaaaaap?";
$page->tpl("body");
$page->tpl("footer");
?>