Collection::normalizeArrayValuesByInt

static function normalizeArrayValuesByInt(&$map, $sorted = true)
{
	if (empty($map) || !is_array($map))
		return;

	$result = array();
	foreach ($map as $value)
	{
		$value = (int)$value;
		if (0 < $value)
			$result[$value] = true;
	}
	$map = array();
	if (!empty($result))
	{
		$map = array_keys($result);
		if ($sorted)
			sort($map);
	}
}