Marathi (Indian language) in joomla PHP


I am trying to develop web site with my own language Marathi from INDIA.
I had installed reqd. templets and languages, also joomla shows web site in Marathi language
but when i place some text content in php pages. i can see only question marks (??? ??? ???).
I need some guidence, please tell me how i can use required language in php pages.

Amit Vedak
Devyani CAD Software Developments