/ in URL breaks and does not reference to the .php file required [duplicate]

Answer 1

Urls with %2f / or %5c \ return a 404 from Apache for security purposes.

You may modify Apache config to enable AllowEncodedSlashes On or NoDecode. Keep in mind that this may introduce unintended security issues, which this "feature" is designed to mitigate.

Apache docs: http://httpd.apache.org/docs/current/mod/core.html#allowencodedslashes

Solved:

• Receive an HTTP 400 error if %2F is part of the GET URL in JBOSS

This one got me too -- thanks for the question

Answer 2

You can equally just do urldecode();