Ebizmarts_MageMonkey_Helper_Data.php

<?php
/**
 * Store detection taking into account scope inheritance
 */
public function getStoreByList($mcListId, $includeDefault = FALSE)
{
    static $storeLists;
    static $defaultCode;
    if (null === $storeLists) {
        $defaultCode = Mage::app()->getDefaultStoreView()->getCode();
        $storeLists = array();
        foreach (Mage::app()->getStores($includeDefault) as $store) {
            /** @var Mage_Core_Model_Store $store */
            $listId = $store->getConfig(Ebizmarts_MageMonkey_Model_Config::GENERAL_LIST);
            $storeLists[$store->getCode()] = $listId;
        }
    }
    // check default store match first
    if ($storeLists[$defaultCode] == $mcListId) {
        return $defaultCode;
    }
    // search in rest of the stores
    foreach ($storeLists as $code => $listId) {
        if ($listId == $mcListId) {
            return $code;
        }
    }
    return null;
}