How to Run a Loop Outside of WordPress?

Sample below can be used on any PHP file even outside your WordPress installation.

Include Basic WordPress Functions

<?php define('WP_USE_THEMES', false);
require('/server/path/to/your/wordpress/site/wp-blog-header.php');
query_posts('showposts=1'); ?>

Run Loop

<?php while (have_posts()): the_post(); ?>
   <h2><?php the_title(); ?></h2>
   <?php the_excerpt(); ?>
   <p><a href="<?php the_permalink(); ?>" class="red">Read more...</a></p>
<?php endwhile; ?>