Comment 2 for bug 220719

Why not add it in a /etc/php5/conf.d/zend.ini as :
 [Zend] # not so sure if this header is useful / needed ?
 include_path = ${include_path} ":/usr/share/php/libzend-framework-php"

The same was suggested for smarty : https://bugs.launchpad.net/ubuntu/+source/smarty/+bug/44404

... well, at least until apache/mod_php5 won't crash if this is done while no explicit previous initialisation of include_path was made (see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=497453)

Can you reopen ?

Hope this helps.