1. ClamAV (http://www.clamav.net) must be installed and tested.

2. Php Clamav Lib Installation:

tar xvzf php-clamav-0.XX.tar.gz
cd php-clamav-0.XX
phpize
./configure --with-clamav
make  
cp modules/clamav.so /usr/local/lib/php/extensions/
(restart Apache)
service httpd restart

(see http://phpclamavlib.org for detailed installation instructions)
