Как суммировать значения и добавить строку в массив codeigniter

Question

MySQL в моделидобавить дополнительное поле и сделать его похожим на `

{"item_code":"TOTAL","totalamountbuy":"$","totalamountsale":"69580","detials_daily":" 158"}

СЕЙЧАС результат

    [{"id_order":"21","item_code":"SALE","totalamountbuy":"$","totalamountsale":"48790","detials_daily":" 153"},
{"id_order":"23","item_code":"SALE","totalamountbuy":"$","totalamountsale":"20790","detials_daily":" 5"}
{"id_order":"20","item_code":"SALE","totalamountbuy":"ERUO","totalamountsale":"22200","detials_daily":" 40"},
{"id_order":"19","item_code":"SALE","totalamountbuy":"TL","totalamountsale":"4500","detials_daily":" 45"},
{"id_order":"0","item_code":"TOTAL","totalamountbuy":"$","totalamountsale":"69580","detials_daily":" 158"}]

Answer 1

// for demonstration purposes, using json_decode to get an array matching your sample data
$querydata = json_decode('[{"id_order":"21","item_code":"SALE","totalamountbuy":"$","totalamountsale":"48790","detials_daily":" 153"},
{"id_order":"23","item_code":"SALE","totalamountbuy":"$","totalamountsale":"20790","detials_daily":" 5"},
{"id_order":"20","item_code":"SALE","totalamountbuy":"ERUO","totalamountsale":"22200","detials_daily":" 40"},
{"id_order":"19","item_code":"SALE","totalamountbuy":"TL","totalamountsale":"4500","detials_daily":" 45"}]');

// initialize total array with 0 as starting value for the fields to sum up
$total = [ 'id_order' => '0', 'item_code' => 'TOTAL', 'totalamountbuy' => '$',
           'totalamountsale' => 0, 'detials_daily' => 0 ];

foreach($querydata as $row) {
  if($row->totalamountbuy == '$') { // if $, add up values
    $total['totalamountsale'] += $row->totalamountsale;
    $total['detials_daily'] += $row->detials_daily;
  }
}

// append total to existing array
$querydata[] = $total;

echo json_encode($querydata);