[Phpmyadmin-devel] Basic TIMESTAMP Question

I am using version 2.8.0.1 as supplied by ixWebHosting and am having trouble adding a TIMESTAMP field which I require to update each time a record is added or updated. If I add a record via phpMyAdmin interface everything is OK, but when I try to use a php file, nothing is added to the database until I delete the TIMESTAMP field. IXwebhosting have suggested I pay $80 per hour to them as it is a coding error, but I'm not convinced. I am, however, a novice user!

My date field is as follows:

Field: Date Type: timestamp Collation: Attributes: ON UPDATE CURRENT_TIMESTAMP Null: No Default: Extra:

My php file does not attempt to populate the Date field