SVN url helper : current_url function added

[eluser]xwero[/eluser]
Lately i'm discovering the current_url function is too inflexible to use, even with my modification, in forms that use segments to specify extra content. So i came up with this modification

Code:

function current_url($uri = '',$segments = 0)
{
    if($uri != ''){ $uri = '/'.$uri; }
    $CI =& get_instance();
    $uri_string = $CI->uri->uri_string();
    if($segments > 0){ $uri_string = implode('/',array_slice($CI->uri->segment_array(),0,$segments)); }
    return $CI->config->site_url($uri_string.$uri);
}