My shared class #array

shared.php

<?php

/**
 * Created by PhpStorm.
 * User: khoand
 * Date: 11/29/15
 * Time: 7:14 PM
 */
class Shared
{
    public static function key($array, $key, $default = null)
    {
        return isset($array[$key]) ? $array[$key] : $default;
    }

    public static function attribute($object, $key, $default = null)
    {
        return isset($object->$key) ? $object->$key : $default;
    }
}