MMS(Multi media messaging) encoding in PHP

Hello Friends, I need you to develop in PHP which can encode MMS(Multi media message) having video contents(3gp format). * here encode means convert to .mms file. Those encoded MMS should work with Nokia,Sony Ericssion,Motorola Handsets. plz, we have already tried MMSlib, its not working so, dont try for that. it should be simple for experienced programer. Thanks.