如何创建codeigniter url到人类友好的URL？

my projects is almost done.but i just need a Seo friendly url for my projects my current url is

http://localhost/example/product/category/1

I want to convert this url into this

http://localhost/example/product/category/name-of-category

pls help guys

You need to use something like slug

public function category($slug)
{
    $query = $this->db->get_where('posts', array('slug' => $slug), 1);

    // Fetch the post row, display the post view, etc...
}

Use dashes to separate words

 $slug = url_title($title, 'dash', true);

you need to take care for this slug to be unique :)