taxonomies.php

<?php
/**
 * Taxonomies
 *
 * This file registers any custom taxonomies
 *
 * @package      CoreFunctionality
 * @since        1.0.0
 * @link         https://github.com/billerickson/Core-Functionality
 * @author       Bill Erickson <[email protected]>
 * @copyright    Copyright (c) 2011, Bill Erickson
 * @license      http://opensource.org/licenses/gpl-2.0.php GNU Public License
 */

/**
 * Create Category Taxonomy
 * 
 * @since 1.0.0
 * @link http://codex.wordpress.org/Function_Reference/register_taxonomy
 */
function ea_register_category_taxonomy() {
  $labels = array(
		'name'              => 'Product Categories',
		'singular_name'     => 'Category',
		'search_items'      => 'Search Categories',
		'all_items'         => 'All Categories',
		'parent_item'       => 'Parent Category',
		'parent_item_colon' => 'Parent Category:',
		'edit_item'         => 'Edit Category',
		'update_item'       => 'Update Category',
		'add_new_item'      => 'Add New Category',
		'new_item_name'     => 'New Category Name',
		'menu_name'         => 'Categories'
	); 	

	register_taxonomy( 'products-category', array('products'), 
		array(
			'hierarchical' => true,
			'labels'       => $labels,
			'show_ui'      => true,
			'query_var'    => true,
			'rewrite'      => array( 'slug' => 'product-category' ),
		)
	);
}
add_action( 'init', 'ea_register_category_taxonomy' );