reconfigure php with a port

[sgmayo at mail.bloomfield.k12.mo.us]

I installed php with the ports option.  I see in the php.ini file where I
can turn Zlib on, but this has no effect.  From what I have read I assume
that I need to reconfigure php --with-zlib.

I tried a 'make config' from the ports directory, but it tells me that
there are no options to configure.

I guess that I need to know exactly how to pass the '--with-zlib' to the
port configure or how to get an option so that I can choose zlib.

Thanks.
Scott