Adds custom categories and tags to media attachemnts

custom_media_cat_tags.php

<?php
/*
Plugin Name: Custom Media Categories and Tags
Description: Plugin adds custom categories and tags to media attachemnts
Version: 1.0
Author: Shelley Howard
Author URI: http://shelleyhoward.com
*/

// register new taxonomies which appliy 'Media Category' and 'Media Tag' to attachments
function sh_create_media_taxonomies() {
	$labels_cat = array(
		'name'              => 'Media Categories',
		'singular_name'     => 'Media Category',
		'search_items'      => 'Search Media Categories',
		'all_items'         => 'All Media Categories',
		'parent_item'       => 'Parent Media Category',
		'parent_item_colon' => 'Parent Media Category:',
		'edit_item'         => 'Edit Media Category',
		'update_item'       => 'Update Media Category',
		'add_new_item'      => 'Add New Media Category',
		'new_item_name'     => 'New Media Category Name',
		'menu_name'         => 'Media Category',
	);
	$args_cat = array(
		'labels' => $labels_cat,
		'hierarchical' => true,
		'query_var' => 'true',
		'rewrite' => 'true',
		'show_admin_column' => 'true'
	);
    	$labels_tag = array(
		'name'              => 'Media Tags',
		'singular_name'     => 'Media Tag',
		'search_items'      => 'Search Media Tags',
		'all_items'         => 'All Media Tags',
		'parent_item'       => 'Parent Media Tag',
		'parent_item_colon' => 'Parent Media Tag:',
		'edit_item'         => 'Edit Media Tag',
		'update_item'       => 'Update Media Tag',
		'add_new_item'      => 'Add New Media Tag',
		'new_item_name'     => 'New Media Tag Name',
		'menu_name'         => 'Media Tag',
	);
	$args_tag = array(
		'labels' => $labels_tag,
		'hierarchical' => false,
		'query_var' => 'true',
		'rewrite' => 'true',
		'show_admin_column' => 'true'
	);

register_taxonomy( 'media_cat', 'attachment', $args_cat );
register_taxonomy( 'media_tag', 'attachment', $args_tag );
}
add_action( 'init', 'sh_create_media_taxonomies' );

?>