$record->changed

Up: class Record

This protected member is an associative array containing the fields of the database record whose value has changed since the record was last read from the database, each identified by the field name all in lower case. Write access to this array is provided by the Record::set method and its synonym subscript access on the left hand side of an assignment. This field is protected so it can only be used by derived classes. Derived classes may define methods that permit access this array but it is recommended that Record::set be called (usually as parent::set) to perform all updates to ensure that this array is managed properly. Normally only the save method of derived classes will access this member to construct a class specific SQL UPDATE or INSERT command and then delete the contents.

Next: $record->former