Hi Markwaitling, I think serialization and unserialization is better when you compare resource mgt and time. Using the database first you have to consider read/write, secondly resource consumption on to/fro database, ideally whatever you have in your database that has already been validated should not be sent back to the db except for comparison. Hope this helps. Osagie Samuel E ICT, University of Abuja, FCT - Abuja Nigeria. +234 7032880195 +234 7025415009 skype : osagiesammy --- In php-objects@xxxxxxxxxxxxxxx, "markwatling@..." <markwatling@...> wrote: > > Hi All > > Looking at moving object data between pages within a session, does anyone know which is more efficient, in resource management and time, serializing & unserializing the object to/from a session variable or writing the object to the database and reading back on the new page. > > Thanks > > Mark >