Select::normalizeOptions

static function normalizeOptions($options)
{
	$normalized = [];
	if (is_array($options))
	{
		foreach ($options as $key => $value)
		{
			if (is_array($value) && sizeof($value) == 2)
			{
				$v = array_values($value);
				$key = $v[0];
				$value = $v[1];
			}
			$normalized[$key] = $value;
		}
	}
	elseif ($options !== '')
	{
		$normalized[$options] = $options;
	}

	return $normalized;
}