which php use Psysh

I installed Psysh (from http://psysh.org) with Cygwin and get it running. I tried to use php write/read microsoft access database. But it does not work so far. I have two php installed. First one installed by web platform installer and second one installed by xampp. How can I know which php installation psych use so I can work on. Thank you.

Solution

I answer my own question. psysh use the php installion showed on path variable.

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