Hello, I upgraded to PHP5 and the upgrade went smoothly. There is a major difference with array_merge() with PHP5 if one of the arrays is null. $Array1 = array_merge($Array2,$Array3); If either $Array2 or Array3 is null $Array1 will be null even though the other array is loaded. Is anyone aware of a listing of function containing potential upgrade problems when upgrading to PHP5. I also had a problem with session_register() which I solved by simply assigning variables to the super global $_SESSION Urb ------------------------ Yahoo! Groups Sponsor --------------------~--> Protect your PC from spy ware with award winning anti spy technology. It's free. http://us.click.yahoo.com/97bhrC/LGxNAA/yQLSAA/saFolB/TM --------------------------------------------------------------------~-> PHP Data object relational mapping generator http://www.metastorage.net/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/php-objects/ <*> To unsubscribe from this group, send an email to: php-objects-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/