How to sum array by value?

Question

How can I sum this array by value? Just sum value of [jumlah] group by [Kondisi].

Array 
( 
[0] => stdClass Object 
    ( 
        [Kondisi] => one
               


        

Answer 1

A sample code can be:

$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));