Since PHP is my go to language I used it to create/display the “raw” query string that should be passed in the URL to result in the appropriate GET variables/parameters on Airtable. It can be used in CURL or any thing else that can make a http request:
$sort = array(
array("field" => "My Field", "direction" => "asc"),
array("field" => "My Other Field", "direction" => "desc")
);
$params = array("sort" => $sort);
echo http_build_query($params);
This results in:
sort%5B0%5D%5Bfield%5D=My+Field&sort%5B0%5D%5Bdirection%5D=asc&sort%5B1%5D%5Bfield%5D=My+Other+Field&sort%5B1%5D%5Bdirection%5D=desc
when unescaped it is:
sort[0][field]=My Field&sort[0][direction]=asc&sort[1][field]=My Other Field&sort[1][direction]=desc