URL Helpers
- anchor()
* fetching description *
- current_url()
* fetching description *
- get_last_segment()
* fetching description *
- get_num_segments()
* fetching description *
- previous_url()
* fetching description *
- redirect()
* fetching description *
- remove_query_string()
* fetching description *
- segment()
* fetching description *