Comment 7 for bug 58564

I can't currently build packages suitable for dapper.

But you can download the (broken) package and tell dpkg to ignore the dependencies.
Make sure that you have the other dependecies installed.

A small howto:
wget http://archive.ubuntu.com/ubuntu/pool/universe/p/php4-yaz/php4-yaz_1.0.4-1build1_i386.deb
sudo apt-get install libwrap0 libxml2 libyaz
# the other dependencies should already be installed
dpkg -i --force-depends php4-yaz_1.0.4-1build1_i386.deb

If you have an AMD64 replace i386 with amd64.