Form Macro: Multi Select for laravel

muliselect.macro.php

Form::macro('multiselect', function($name, $list = [], array $selected = [], $options = [])
{

    $options['name'] = $name;
	$html = array();
	if (is_string($selected)) $selected[$selected] = $selected;
	//dd($list, $selected);
	foreach ($list as $value => $display)
	{
		$sel = isset($selected[$value])?' selected="selected"':'';
		$html[] = '<option value="'.$value.'"'.$sel.'>'.e($display).'</option>';
	}

	// build out a final select statement, which will contain all the values.
	$options = HTML::attributes($options);

	$list = implode('', $html);

	return "<select{$options} multiple=\"multiple\">{$list}</select>";

});

Thanks :)