The following links should all have the query string ?P=5%B02%27.
example.com/query?P=5%B02%27
www.example.com/query?P=5%B02%27
http://www.example.com/query?P=5%EF%BF%BD2%27
http://www.example.com/query?P=5�2'
https://www.example.com/query?P=5%EF%BF%BD2%27
https://example.com/test
www.example.com/test?utm_source=abc