function csscrush_file($file, $options = null)
{
    return csscrush::file($file, $options);
}
<?php

require_once 'css/CssCrush.php';
$CssFile = csscrush::file("/cauldron/css/stylesheets/style.css");
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
	<link rel="stylesheet" type="text/css" href="<?php 
echo $CssFile;
?>
" />
	<script type="text/javascript" src="js/jquery_1.7.1_min.js"></script>
</head>
<body>