Thank you very much for your answer.
However: that is a plugin for Filemaker, right? (meaning an addition to be installed in Filemaker, correct?)
I am actually looking for a standalone script, so that I will not have to open Filemaker to read the .fm7 files.
You can not open and parse FileMaker file without FileMaker, as far as I know. I would just charge customer extra as you need additional software for work.
You could try to install FileMaker ODBC driver and specify your fm7 files as DSN. I have never tried this without filemaker installed as I would usually have around 5 versions of FileMaker installed at any time.
Also, there is this for people desperate to migrate from FIleMaker:
I did not try it and it cost twice more than FIleMaker Pro license.
Does anyone know if there are any existing PHP projects that can read .fm7 files and return the contents as an array / object - or even better: as an .sql file?
In order for PHP to interact with a FileMaker file, that fm file needs to be hosted so that the PHP API or XML API is available.