On a tutorial for dynamic page replacing content, the example demo files have php scripts that are supposed to run inside of an .html file\[code\]<body> <?php include('../header.php'); ?>\[/code\]how does this work? Here is a link to the demo: http://css-tricks.com/rethinking-dynamic-page-replacing-content/my website that I'm implementing this on has file structure like: \[code\]index.phpincludes/header.htmlincludes/footer.html\[/code\]etc. So I was trying to change my structure to look more like the exampleindex.htmlincludes/header.phpbut it doesn't seem to work.