Sort array of users objects, based on their name

gistfile1.php

<?php
class User
{
	protected $name;
	
	/*
	Returns < 0 if $a->name is less than $b->name; > 0 if $a->name is greater than $b->name, and 0 if they are equal. 
	*/
	static function sortUsersName(User $a, User $b)
	{
		return strcmp($a->name, $b->name);
	}
	
	static function sortUsers($users)
	{
		if (is_array($users)
		{
			// sortUsersName MUST be a static class method in this case
			usort($users, array('User', 'sortUsersName'));
			
			return $users
		}
		else
			return false;
	}
}