importing articles from wordpress

[eluser]Piatra[/eluser]
i have my domain, lets call it example.com . i have wordpress in one folder and codeigniter in another. i want to import articles from wordpress to codeigniter .
my structure is
www.example.com/blog/
www.example.com/codeigniter/
I tried importing using

Code:

<?php
// Include Wordpress
define('WP_USE_THEMES', false);
require('./blog/wp-load.php');
query_posts('showposts=1');
?>

But i get an error saying call to undefined function query_posts. Really need to get this done. Any help is more then welcomed!