如何按值对数组求和？
如何按值对这个数组求和？只需将 [jumlah] 组的值与 [Kondisi] 相加即可。
Array
(
[0] => stdClass Object
(
[Kondisi] => one
[jumlah] => 2
)
[1] => stdClass Object
(
[Kondisi] => two
[jumlah] => 3
)
[2] => stdClass Object
(
[Kondisi] => three
[jumlah] => 4
)
[3] => stdClass Object
(
[Kondisi] => one
[jumlah] => 3
)
[4] => stdClass Object
(
[Kondisi] => two
[jumlah] => 1
)
[5] => stdClass Object
(
[Kondisi] => three
[jumlah] => 3
)
)
我尝试过如何对多维数组中的所有列值求和？，但没有帮助。
我想要这样的输出：
Array
(
[0] => stdClass Object
(
[Kondisi] => one
[jumlah] => 5
)
[1] => stdClass Object
(
[Kondisi] => two
[jumlah] => 4
)
[2] => stdClass Object
(
[Kondisi] => three
[jumlah] => 7
)
)
摇曳的蔷薇1回答
-
料青山看我应如是
示例代码可以是：$sums = [];// `$objects` is your initial array foreach ($objects as $object) { // here we check if key `$object->Kondisi` exists in `$sums` array if (empty($sums[$object->Kondisi])) { // if `no` - this is new object, store it as is $sums[$object->Kondisi] = $object; } else { // if `yes` - add `jumlah` value to existing `jumlah` property $sums[$object->Kondisi]->jumlah += $object->jumlah; }}// use `array_values` to get 0-indexed arrayprint_r(array_values($sums));
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