Laravel: Using form::select with <optgroup>

optgroup.php

<?php
//Source: http://forums.laravel.com/viewtopic.php?id=2807

Route::get('optgroup', function()
{
	$eat_options = array(
		'animals' => array(
			'cats',
			'dogs',
			'monkeys',
		),
		'robots' => array(
			'bender',
			'johnny 5',
			'metal gear',
		),
	);

	echo Form::select( 'thing_to_eat', $eat_options, Input::old( 'thing_to_eat' ));

});

?>

Worked with Laravel 4.2

it works with laravel 5.3, i had the same issue but i used [ ] instead of array()

Perfect 💯 works with laravel 5.3*

Worked with Laravel 5.4