Does it mean my visa is approved

I attended h1b visa interview today in Hyderabad. I didn’t clearly understand what officer has said after completion of the interview. He didn’t give me any form like 221g but he kept our passport with him. When I checked the status online, it says my visa is under administrative processing. Does it mean my visa is approved? I remember telling us have a nice day (or trip) which we don’t understand clearly. Kindly let me know if this means a good sign.

It’s a good sign that they kept the passport. Administrative processing implies they are not ready to issue the visa yet. They need to do additional processing. As they didn’t ask for any additional documents, it is something at their end (like PIMS). You have to wait for them to finish this task which can take few days to several months.