php array group by key
$arrRoom[] = array("RoomCode" => "Deluxe", "Rates" => array ( array( "BoardCode" => "RO", "Price" => 100) )); $arrRoom[] = array("RoomCode" => "Standard", "Rates" => array ( array( "BoardCode" => "RO", "Price" => 100) )); $arrRoom[] = array("RoomCode" => "Deluxe", "Rates" => array (array( "BoardCode" => "RO", "Price" => 200) )); foreach($arrRoom as $room) { foreach($room['Rates'] as $rates) { $nRooms[$room['RoomCode']][$rates['BoardCode']][] = array("RoomCode" => $room['RoomCode'], "MealCode" => $rates['BoardCode'], "Price" => $rates['Price']); } } echo "\n ==== Output in Json Format ==== \n"; { "Deluxe": { "RO": [ { "RoomCode": "Deluxe", "MealCode": "RO", "Price": 100 }, { "RoomCode": "Deluxe", "MealCode": "RO", "Price": 200 } ] }, "Standard": { "RO": [ { "RoomCode": "Standard", "MealCode": "RO", "Price": 100 } ] } }
