gjerokrsteski/pimf-framework

<?php
/**
 * Pimf
 *
 * @copyright Copyright (c)  Gjero Krsteski (http://krsteski.de)
 * @license   http://opensource.org/licenses/MIT MIT License
 */
namespace Pimf;

/**
 * A well-known object that other objects can use to find common objects and services.
 *
 * @package Pimf
 * @author  Gjero Krsteski <gjero@krsteski.de>
 */
class Config
{

    /**
     * The temporary storage for the accumulator.
     *
     * @var \ArrayObject
     */
    protected static $battery;

    /**
     * @param array $config
     * @param bool  $override Used for testing only!
     */
    public static function load(array $config, $override = false)
    {
        if (!self::$battery || $override === true) {
            self::$battery = new \ArrayObject($config, \ArrayObject::STD_PROP_LIST + \ArrayObject::ARRAY_AS_PROPS);
        }
    }

    /**
     * Get an item from an array using "dot" notation.
     *
     * @param string|integer $index The index or identifier.
     * @param mixed          $default
     *
     * @return mixed|null
     */
    public static function get($index, $default = null)
    {
        if (self::$battery->offsetExists($index)) {
            return self::$battery->offsetGet($index);
        }

        $array = self::$battery->getArrayCopy();

        foreach ((array)explode('.', $index) as $segment) {

            if (!is_array($array) || !array_key_exists($segment, $array)) {
                return $default;
            }

            $array = $array[$segment];
        }

        return $array;
    }
}