Simple conversion tool for data from Omeka API to CSV file.
Based on ApiImport
PHP 5.4
Slap this up on your server someplace.
Define an Omeka API endpoint in OmekaApiToCsv.php, then run the script. CSV export file will appear in the files folder.
Currently no authentication, so only public items will be exported.
Watch for timeouts -- your server settings might stop the script before it completes if you have a lot of items. If you can run it from the command line, you might have better luck.
CSV. It's Comma Separated Values, so it can't handle much density. If you have multiple values for an element (e.g., more than one title), all values for that element will be smooshed into one.