$surveyResponses = $myJSONRPCClient->export_responses(
    $sessionKey,
    $survey_id,
    'json', // Document type : pdf,csv,xls,doc,json
    null, // Language code : null : default from survey
    'complete', // Stautus complete|incomplete|all
    NULL, // Heading : code|full|abbreviated : question text, default code
    NULL, // answer : short|long , default : long
    1,
    30,
    ['id','token','submitdate','lastpage','interviewtime','159677X490X12345time','159677X487X23123time']
    );