PHP

wordpress custom post type Query

<?php 
    query_posts(array( 
        'post_type' => 'portfolio',
        'showposts' => 10 
    ) );  
?>
<?php while (have_posts()) : the_post(); ?>
        <h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2>
        <p><?php echo get_the_excerpt(); ?></p>
<?php endwhile;?>

wp_query custom post type

/* WordPress: Query a custom post type */

// Query all Case Study post types
<?php query_posts('post_type=case_studies'); ?>