an exercise from #yap book

gistfile1.php

<?php
/**
 * void render(string $template, array $vars = NULL)
 *
 */
function render($template, $vars = NULL){
	if($vars != NULL){
		foreach($vars as $name => $val){
			$$name = $val;
		}
	}
	include $template;
}

function render_extract($template, $vars = NULL){
	if($vars != NULL){
		extract($vars);
	}
	include $template;
}

if(isset($_POST['nume']) && is_string($_POST['nume'])){
	$nume = $_POST['nume'];
}

if(isset($nume)){
	render_extract('greet_nume.php', array('nume' => $nume));
}
else{
	include 'greeting_form.php';
}