idu_taxonomy.class.php

<?php
class Idu_Taxonomy {

    function __construct($taxonomy) {

		$this->taxonomy = $taxonomy;
		$this->taxonomy["singular"] = $this->prepare_name($taxonomy["singular"]);
		$this->taxonomy["plural"] 	= $this->prepare_name($taxonomy["plural"]);

		if("tax" == $taxonomy["type"]) {
			$this->generate_taxonomy();
		} else if("cpt" == $taxonomy["type"]) {
			$this->generate_posttype();
		}

	}

	function prepare_name($string) {

		if( preg_match("/-/", $string) ) {
			return ucwords( str_replace("-", " ", $string) );
		} else {
			return $string;
		}

	}

	function generate_posttype() {
		register_post_type( $this->taxonomy["singular"], array(
			'public'					=> true,
			'menu_position'		=> $this->taxonomy["menu_pos"],
			'capability_type'	=> 'page',
			'rewrite'					=> array( 'slug' => $this->taxonomy["singular"] ),
			'supports'				=> isset($this->taxonomy["supports"]) ? $this->taxonomy["supports"] : array( 'title', 'thumbnail', 'editor' ),
			'labels'					=> array(
		    'name'								=> $this->taxonomy["plural"],
		    'menu_name' 					=> $this->taxonomy["menu_label"],
		    'singular_name'				=> $this->taxonomy["singular"],
		    'add_new'							=> __("Add New"),
		    'add_new_item'				=> __("Add ") . $this->taxonomy["singular"],
		    'edit_item'						=> __("Edit ") . $this->taxonomy["singular"],
		    'new_item' 						=> __("New ") . $this->taxonomy["singular"],
		    'all_items' 					=> __("All ") . $this->taxonomy["plural"],
		    'view_item' 					=> __("View ") . $this->taxonomy["singular"],
		    'search_items' 				=> __("Search ") . $this->taxonomy["plural"],
		    'not_found' 					=> __("Can not find ") . $this->taxonomy["singular"],
		    'not_found_in_trash'	=> __( sprintf("Can not find %s in trash", $this->taxonomy["singular"]) )
			)
		) );
	}

	function generate_taxonomy() {
		register_taxonomy( $this->taxonomy["singular"], $this->taxonomy["post_type"], array(
			'show_ui'           => true,
			'rewrite'           => array( 'slug' => $this->taxonomy["singular"] ),	
			'query_var'         => true,
			'hierarchical'      => true,
			'show_admin_column' => true,
			'labels'            => array(
				'name'              => $this->taxonomy["plural"],
				'singular_name'     => $this->taxonomy["singular"],
				'search_items'      => __("Search ") . $this->taxonomy["plural"],
				'all_items'         => __("All ") . $this->taxonomy["plural"],
				'parent_item'       => __("Parent ") . $this->taxonomy["singular"],
				'parent_item_colon' => __("Parent ") . $this->taxonomy["singular"] . ':',
				'edit_item'         => __("Edit ") . $this->taxonomy["singular"],
				'update_item'       => __("Update ") . $this->taxonomy["singular"],
				'add_new_item'      => __("Add New ") . $this->taxonomy["singular"],
				'new_item_name'     => __("New ") . $this->taxonomy["singular"],
				'menu_name'         => $this->taxonomy["menu_label"]
			),
		) );

		if( exists($this->taxonomy["post_type"]) ) {
			foreach ($this->taxonomy["post_type"] as $item) {
				register_taxonomy_for_object_type( $this->taxonomy["singular"], $item );
			}			
		}
	}

}

$cpt = new Idu_Taxonomy( array(
  "singular"  => "book",
  "plural"    => "books",
  "type"      => "cpt"
) );
?>