Getting error "No JSON provided" from Ogre when using post, but when use online converter same JSON is recognized

Question

I'm troubleshooting an issue trying to use Ogre to convert a GeoJSON to a Shapefile.

I was trying using php curl_exec, and also with Postman, and get the same response with each:

{
    "error": true,
    "msg": "No json provided"
}

However, when I paste the json into their web tool here, it successfully converts: https://ogre.adc4gis.com/

My php code looks like this:

           $posturl = "https://ogre.adc4gis.com/convertJson";
           $params = array('json'=>$geojson);
           $ch = curl_init();
           curl_setopt($ch, CURLOPT_FILE, $out);
           curl_setopt($ch, CURLOPT_URL, $posturl);
           curl_setopt($ch, CURLOPT_HEADER, false);
           curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
           curl_setopt($ch, CURLOPT_POST, 1);
           curl_setopt($ch, CURLOPT_POSTFIELDS, $params);         
           curl_setopt($ch, CURLOPT_VERBOSE, true);
           $streamVerboseHandle = fopen($CI->config->item('log_path').'curl_log.log', 'w+');
           cucurl_execrl_setopt($ch, CURLOPT_STDERR, $streamVerboseHandle);
           $output = curl_exec($ch);
           curl_close($ch);

$params looks like this:

(
    [json] => {"type":"FeatureCollection","features":[{"type":"Feature","geometry":{"type":"Point","coordinates":[-73.32271671155468,44.55490573909421]},"properties":{"fldOriginalCode":"CR","fldOriginalValue":"Colchester Reef","fldDescription":"Estimated location of Colchester Reef"}}]}
)

I'm not sure why I can't get it to convert using a post request?

Thank you!

Answer 1

It ended up working with this:

curl_setopt($ch, CURLOPT_POSTFIELDS, "json=$geojson");

instead of

curl_setopt($ch, CURLOPT_POSTFIELDS, $params);