The URI you submitted has disallowed characters. encode var in URL

Question

I have a registration form in my application. When someone complete the registration receive an email with a link to confirm registration (typical situation). The link is something like this http://www.myDomain.com/registration/validation/m0NQGT4XzQgId5zuH/1PrDqNSP7YWq81Mba8cSXLb1WsQ5aVqf2sQ3Ece3ZdmxYvLjztaGp7Xmhv8ArjFET/8Q== - registration is the controller - validation is the function - and the last one is the username Encoding the username: ``` $encrypted_username = $this->encrypt->encode($username); ``` But, accessing the link returns the following error The URI you submitted has disallowed characters. Setting `$config['permitted_uri_chars'] = '';` everything goes right, but they say we shouldn't do this. So, how can I solve this problem right?

Accepted Answer

I changed my config.php to

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

and now is working fine, I hope this is a safe solution.

The URI you submitted has disallowed characters. encode var in URL

Solution

Problem