Shibboleth RequestMapper with PHP Does Not Parse

[Franz Noel Tanglao]

I'm trying to fix shibboleth2.xml configured with RequestMapper to run 
with PHP.

My Apache is configured as follows:

     LoadModule mod_shib /usr/lib64/shibboleth/mod_shib_24.so

     ShibcompatValidUser Off

     <Location />
         SetHandler shib
         AuthType None
         Require all granted
     </Location>

The rest is configured in shibboleth2.xml RequestMapper. PHP does not 
seem to parse automatically, It previously worked when Apache did not 
delegate anything to Shibboleth to map requests.

Do you have any documentation that supports this type of problem? Please 
let me know if there are any setting that you need to look for if it was 
set.