To build PHP as an fhttpd module, answer "yes" to "Build as an
fhttpd module?" (the
option to configure) and specify the fhttpd source base
directory. The default directory is /usr/local/src/fhttpd. If you are
running fhttpd, building PHP as a module will give better
performance, more control and remote execution capability.
Support for fhttpd is no longer available as of PHP 4.3.0.