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SpencerChang edited this page Jul 24, 2016
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3 revisions
22026, 'orderDfPrice' => 450, 'orderDfQty' => 3, );
$arr1 = array(
array (
'prodUid' => 22026,
'orderDfPrice' => 450,
'orderDfQty' => 3, )
,array (
'prodUid' => 1,
'orderDfPrice' => 100,
'orderDfQty' => 2, )
);
//echo count($arr1);
print_r(getOffsetBonus($arr,100));
function getOffsetBonus($orderDetail, $ecoupon) {
if ($ecoupon > 0) {
$amount = intval(1250);
if(isset($orderDetail[0])){
$total_offset = 0;
$length = count($orderDetail)-1;
for($index = $length;$index>=0;$index--){
// 原始各商品金額
$ori_price = intval($orderDetail[$index]['orderDfQty']) * $orderDetail[$index]['orderDfPrice'];
// 尾差加在第一筆
if($index==0){
$final_price = $ori_price - ($ecoupon-$total_offset);
}else{
// 計算公式: 去尾數（折扣總價 ＊ 各商品售價 / 折扣前總價）
$final_price = floor($amount * $ori_price / ($ecoupon+$amount));
// 計算總折扣
$total_offset += $ori_price - $final_price;
}
// 折扣後除以商品數量的餘數
$remainder = $final_price % intval($orderDetail[$index]['orderDfQty']);
// 回寫 商品金額
$orderDetail[$index]['orderDfPrice'] = floor($final_price / $orderDetail[$index]['orderDfQty']);
// 有餘數時處理，原數量減一，新增一個陣列是含餘數的金額
if($remainder != 0){
$orderDetail[$index]['orderDfQty']--;
$new_order = array();
$new_order = $orderDetail[$index];
$new_order['orderDfPrice'] = $new_order['orderDfPrice']+$remainder;
$new_order['orderDfQty'] = 1;
array_push($orderDetail,$new_order);
}
}
}else{
$final_price = (intval($orderDetail['orderDfQty']) * $orderDetail['orderDfPrice'] - $ecoupon);
$remainder = $final_price % intval($orderDetail['orderDfQty']);
$orderDetail['orderDfPrice'] = floor($final_price / $orderDetail['orderDfQty']);
if($remainder != 0){
$orderDetail['orderDfQty']--;
$new_order = array();
array_push($new_order,$orderDetail);
$orderDetail['orderDfPrice'] = $orderDetail['orderDfPrice']+$remainder;
$orderDetail['orderDfQty'] = 1;
array_push($new_order,$orderDetail);
$orderDetail = $new_order;
}
}
return (object) $orderDetail;
} else {
return (object) $orderDetail;
}
}