example.php

<?php

class Product extends \Eloquent
{
	public function category()
	{
		return $this->belongsTo('Category');
	}
	public function options()
	{
		return $this->belongsToMany('ProductOption');
	}
}

class ProductOption extends \Eloquent
{
	public function products()
	{
		return $this->belongsToMany('Product');
	}
}

class Category extends \Eloquent
{
	public function products()
	{
		return $this->hasMany('Product');
	}
}

$products = Product::with('category', 'options')->get();