如何按值对此数组求和?只是[Kondisi]的[jumlah]组的总和。
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
)
)
我试过如何汇总 multi-dimensional 数组中的所有列值?,但没有帮助。
我想像output这样:
Array
(
[0] => stdClass Object
(
[Kondisi] => one
[jumlah] => 5
)
[1] => stdClass Object
(
[Kondisi] => two
[jumlah] => 4
)
[2] => stdClass Object
(
[Kondisi] => three
[jumlah] => 7
)
)
分析解答
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 += $object->jumlah;
}
}
// use `array_values` to get 0-indexed array
print_r(array_values($sums));