I modified nethserver-phpsettings to change the values of php in the e-smith database rather only for the virtualhost. please test and report on NS7 (use a vm please). Of course now you adjust the php settings for the specified virtualhost and/or for the whole apache server.
yum install http://mirror.de-labrusse.fr/NethDev/nethserver-phpsettings-1.1.1/nethserver-phpsettings-1.1.1-1.ns7.sdl.noarch.rpm