<?php

/**

* Copyright 2014 Openstack Foundation

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

**/

/**

* Class ArrayUtils

*/

final class ArrayUtils {

/**

* @param array $in

* @param array|null $default_string

* @param array|null $other

* @return array

*/

public static function AlphaSort (array $in, array $default_string = null, array $other=null) {

array_multisort($in, SORT_STRING);

if(!is_null($default_string) && is_array($default_string)) {

$in = array_merge($default_string, $in);

}

if(!is_null($other) && is_array($other)){

$in = array_merge($in, $other);

}

return $in;

}

}