excel exporter

Hi all,

i have several php files which each run a different SELECT query and
displays the data in a table. I would like to create an option to export the
table to excel and one route i would like to go down is creating a single
export.php file with an excel header; and basically it would read the sql
query stored in a session; and just create a spreadsheet from the results.
the problem is each query yields a different number of columns, so what php
code would tell it to select all fields for every row rather than specifying
each field one by one?

I hope this makes sense to you.

Kind regards

T