A client's site was originally written for ASP and Access. I have converted the Access database to mySQL (mySQL Front is a great GUI) .

The new hosting company uses ChiliSoft ASP and so far I have only had to make a few minor changes (mostly the sql queries) in the existing pages.

Since the pages are still working, I am debating whether to recode all of them for PHP.

Is there a performance difference or other considerations between them?