<?xml version="1.0" encoding="ISO-8859-1"?>
<slide fontsize="6em">
	<title>Compiling: Example</title>

	<blurb>fibonacci.php:</blurb>
	<example fontsize="1.5em"><![CDATA[<?php
	$cache = array();

	function fibonacci($nr) {
		global $cache;

		if (isset($cache[$nr])) {
			return $cache[$nr];
		}
		switch ($nr) {
			case 0:
				die("Invalid Nr\n");
			case 1:
				return 1;
			case 2:
				return 1;
			default:
				$r = fibonacci($nr - 2) + fibonacci($nr - 1);
				$cache[$nr] = $r;
				return $r;
		}
	}

	echo fibonacci($argv[1])."\n";
?>]]></example>
</slide>
