在Codeigniter中加密uri段

$id=urlencode($this->encrypt->encode($user[\'id\']));

$id_decrypt=$this->encrypt->decode(urldecode($id));

http://localhost/app_name/index.php/profile/view_profile/b98N98YNqoEA7yI1tavIY1s51RhiSHKGCFarU4A6XgFUMB%2BI3KwiEA23h1XITmkq1qPABqGs8e1sdP16v4og8g%3D%3D

$config[\'permitted_uri_chars\'] = \'a-z 0-9~%.:_-;

$config[\'permitted_uri_chars\'] = \'a-z 0-9~%.:_\\\'+,-=\';

%2B

+

+

%3D

=