<?php 
/********************************************************************
* @Author: Boutros AbiChedid
* @Date: February 13, 2011
* @Description: Functions that register Custom Post Types (CPTs)
* (Products, Restaurants, Hotels), and adds them to the WP dashboard.
* @Tested on: WordPress version 3.3.1 (Works on WP version >= 3.0)
*********************************************************************/
 
add_action( 'init', 'register_new_post_type_products' );
function register_new_post_type_products() {
    register_post_type( 'multi_products',
        array(
            'labels' => array(
            'name' => __( 'Products' ),
            'singular_name' => __( 'Product' )
            ),
        'public' => true,
        'has_archive' => true,
		'supports' => array('title','editor','excerpt','custom-fields')
        )
    );
}
add_action( 'init', 'register_new_post_type_restaurants' );
function register_new_post_type_restaurants() {
    register_post_type( 'multi_restaurants',
        array(
            'labels' => array(
            'name' => __( 'Restaurants' ),
            'singular_name' => __( 'Restaurant' )
            ),
        'public' => true,
        'has_archive' => true,
		'supports' => array('title','editor','excerpt','custom-fields')
        )
    );
}
add_action( 'init', 'register_new_post_type_hotels' );
function register_new_post_type_hotels() {
    register_post_type( 'multi_hotels',
        array(
            'labels' => array(
            'name' => __( 'Hotels' ),
            'singular_name' => __( 'Hotel' )
            ),
        'public' => true,
        'has_archive' => true,
		'supports' => array('title','editor','excerpt','custom-fields')
        )
    );
}
?>

<?php 
/********************************* CODE-b ********************************
* @Author: Boutros AbiChedid 
* @Date:   February 13, 2012
* @Websites: bacsoftwareconsulting.com/ ; blueoliveonline.com/
* @Desc: Adds Custom Post Types to your Dynamically generated HTML sitemap.
* @Tested on: WordPress version 3.3.1 (Works on WP version 3.0 and higher)
***************************************************************************/ 

//Iterate over get_post_types arrays. 
//get_post_types(): returns the registered post types as found in $wp_post_types. 
//Set '_builtin' to false and 'public' to true to return only public Custom Post Types.
foreach( get_post_types( array('public' => true, '_builtin' => false) ) as $post_type ) {

//Retrieves an object which describes any registered post type: 
//in this case only user-created Custom Post TypeS
$cpt = get_post_type_object( $post_type );

echo '<h2>'.$cpt->labels->name.':</h2>';
echo '<ul class="sitemap-pages">'; /***MODIFY THE CSS CLASS TO FIT YOUR THEME***/

$args = array(
	'post_type' => $post_type,
    'post__not_in' => array(), /**Exclude custom posts by ID separated by comma inside the array.**/
	'posts_per_page' => -1  //show all custom posts
);
$query_cpt = new WP_Query($args);

//Loop throught the Custom Post TypeS and display them as a list. Exit when done.
while( $query_cpt->have_posts() ) {
	$query_cpt->the_post();
	echo '<li><a title="'.get_the_title().'" href="'.get_permalink().'">'.get_the_title().'</a></li>';
}
echo '</ul>';
} 
?>