T5 Sort Editable Roles

t5-sort-editable-roles.php

<?php
/**
 * Plugin Name: T5 Sort Editable Roles
 * Description: Sort roles by their display name.
 * Plugin URI:  http://wordpress.stackexchange.com/questions/74785/alphabetically-order-role-drop-down-selection-in-dashboard
 * Version:     2012.12.03
 * Author:      Thomas Scholz
 * Author URI:  http://toscho.de
 * Licence:     MIT
 * License URI: http://opensource.org/licenses/MIT
 */

add_filter( 'editable_roles', 't5_sort_editable_roles' );

/**
 * Array of roles.
 *
 * @wp-hook editable_roles
 * @param   array $roles
 * @return  array
 */
function t5_sort_editable_roles( $roles )
{
	uasort( $roles, 't5_uasort_editable_roles' );
	return $roles;
}
/**
 * Compare translated role names.
 *
 * @param  array $a First role
 * @param  array $b Second role
 * @return number
 */
function t5_uasort_editable_roles( $a, $b )
{
	return strcasecmp(
		translate_user_role( $a['name'] ),
		translate_user_role( $b['name'] )
	);
}