CodeIgniter Framework The URI you submitted has disallowed characters error resolution _php instance

In Ci, when the URI passes the parameter, it appears: The URI you submitted has disallowed characters. Error.
Reason: This is because there are characters in the URI that are not allowed by CI.

Solution:

In the config/config.php file, find

Copy Code code as follows:

$config [' permitted_uri_chars '] = ' A-Z 0-9~%.:_/-i ';

Add the allowed characters inside. If I need to add the @ symbol, you can do this:

Copy Code code as follows:

$config [' permitted_uri_chars '] = ' A-Z 0-9~%.:_/-i@ ';