The fetch method gets the next row and sets the objects variables to the rows data.
It returns TRUE if data has been collected, and FALSE when there is no more data.
Return value
boolean - TRUE on success and FALSE on failure.
Note
This function can not be called
statically.
Fetch is called by staticGet and get calls, so you can override this method in your
classes, to add extra data to your object (like formated dates etc)