Has anyone seen this:

New install of NW65SP7 with iFolder and MySQL.
When I enable the PHP module, I am no longer able to login to iFolder
admin and the iFolder client reports "connection broken" The Apache screen
show unable to login with LDAP. As soon as I disable the PHP, iFolder
starts working again.
I have duplicated this on 3 different physical boxes.
Any suggestions would help.
Thanks