Online PHP editor | refs for PJ71s

<?php $data = array('top_level_data' => array('extension' => array(), 'sub_level_data1' => 0 ) ); $data['top_level_data']['extension'] = (object)$data['top_level_data']['extension']; $data['top_level_data'] = array($data['top_level_data']); echo json_encode($data, JSON_PRETTY_PRINT); $data = array('top_level_data' => array( array('extension' => (object)array(), 'sub_level_data1' => 0 ) ) ); echo json_encode($data, JSON_PRETTY_PRINT);