public static function arrayMergeOverwrite($arr1, $arr2)
{
foreach ($arr2 as $key => $value) {
if (array_key_exists($key, $arr1) && is_array($value)) {
$arr1[$key] = MUtil::arrayMergeOverwrite($arr1[$key], $arr2[$key]);
} else {
$arr1[$key] = $value;
}
}
return $arr1;
}
