Register a new content type in WordPress

gistfile1.php

add_action('init', 'CONTENTTYPE_register');

function CONTENTTYPE_register() {
	$labels = array(
		'name' 			=> _x('CONTENTTYPE NAME', 'post type general name'),
		'singular_name' 	=> _x('CONTENTTYPE NAME', 'post type singular name'),
		'add_new' 		=> _x('Add New', 'CONTENTTYPE NAME'),
		'add_new_item'  	=> __('Add New CONTENTTYPE NAME'),
		'edit_item' 		=> __('Edit CONTENTTYPE NAME'),
		'new_item' 		=> __('New CONTENTTYPE NAME'),
		'view_item' 		=> __('View CONTENTTYPE NAME'),
		'search_items' 		=> __('Search CONTENTTYPE NAME'),
		'not_found' 		=>  __('Nothing found'),
		'parent_item_colon' 	=> ''
	);
	$args = array(
		'labels' 		=> $labels,
		'public' 		=> true,
		'publicly_queryable'	=> true,
		'show_ui' 		=> true,
		'query_var' 		=> true,
		'menu_icon'		=> get_stylesheet_directory_uri() . '/images/icon_album.png',
		'rewrite' 		=> array('slug' => 'ortho-pinion'),
		'capability_type'	=> 'post',
		'hierarchical' 		=> false,
		'menu_position' 	=> null,
		'supports' 		=> array('title','editor','categories','thumbnail'),
	); 
	register_post_type( 'CONTENTTYPE' , $args );
}