Having trouble installing joomla from ports

[Andrew Falanga]

Hi,

I've installed the joomla CMS program from the ports tree.  Then, following 
the instructions from joomla's website, started the installation process.  
The first step in the process is to test for system requirements.  It says 
I'm failing the Zlib compression support requirement.  What is it looking 
for?  I have php5-zlib installed from ports.  What Zlib package does it want 
to have?  Any help is greatly appreciated.

Thanks,
Andy