Online PHP editor | output for OfK3X

<?php $json = '[{"macAddress":"xx:xx:xx:xx:xx:xx","lastData":{"dateutc":1595258880000,"tempinf":74.3,"humidityin":44,"baromrelin":29.929,"baromabsin":29.235,"tempf":85.5,"battout":1,"humidity":62,"winddir":167,"windspeedmph":0.2,"windgustmph":1.1,"maxdailygust":9.2,"hourlyrainin":0,"eventrainin":0,"dailyrainin":0,"weeklyrainin":0,"monthlyrainin":0.571,"totalrainin":1.823,"solarradiation":832.38,"uv":8,"feelsLike":90.84,"dewPoint":70.96,"feelsLikein":73.5,"dewPointin":51,"tz":"America/Chicago","date":"2020-07-20T15:28:00.000Z"},"info":{"name":"My Weather Station","coords":{"coords":{"lon":134.65635809999999,"lat":32.6587316},"address":"100 Park Lane, Yourtown, TN 77777, USA","location":"Yourtown","elevation":146.7066497802734,"geo":{"type":"Point","coordinates":[134.65635809999999,32.6587316]}}}}]'; $data = json_decode($json, true); $fp = fopen('php://memory', 'w+'); // simulate file access $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($data)); $csvArray = []; foreach($iterator as $value) { $csvArray[] = $value; } fputcsv($fp, $csvArray); // Output result rewind($fp); // set filepointer to beginning var_dump(fread($fp, 1024)); // read content (max 1024 bytes) fclose($fp);