Online PHP editor | refs for bFKE4

<?php $majorEarning = array( array( 'user_id' => 1, 'booking_id' => 2, 'price' => 30 ), array( 'user_id' => 2, 'booking_id' => 1, 'price' => 60 ), array( 'user_id' => 2, 'booking_id' => 6, 'price' => 10 ), array( 'user_id' => 1, 'booking_id' => 4, 'price' => 50 ) ); $r = []; foreach($majorEarning as $v){ array_key_exists($v['user_id'], $r) ? ($r[$v['user_id']]['booking_data'][] = ['booking'=>$v['booking_id'],'price'=>$v['price']]) : ($r[$v['user_id']] = ['user_id' => $v['user_id'], 'booking_data' => [['booking'=>$v['booking_id'], 'price'=>$v['price']]]]); } print_r($r);