I have an array of objects, and i want to sum value of one of the properties, example:
Array
(
[0] => stdClass Object
(
[name] => jon
[commission] => 5
)
[1] => stdClass Object
(
[name] => smith
[commission] => 1
)
[2] => stdClass Object
(
[name] => philip
[commission] => 8
)
)
I want to sum all the commissions in the array, result should be 14.
What is a good way for this?
array_reduce could be one way to do it; Just simply add your $array
$sum = array_reduce($array, function($carry, $item)
{
return $carry + $item->commission;
});
var_dump($sum);
+= operator in the callback? I guess it can be just +?If you are using PHP 5.5
$arr_new = array_sum(array_column($yourarray, 'commission'));
Let's say $arr stores your information. Implement the following function:
function sumProperties(array $arr, $property) {
$sum = 0;
foreach($arr as $object) {
$sum += isset($object->{$property}) ? $object->{$property} : 0;
}
return $sum;
}
After that you just have to call sumProperties($array, 'commission').
Furthermore if you have more properties that could be summed, you could replace commission with those properties.
$sum = 0;
foreach($arrObj as $key=>$value){
if(isset($value->commission))
$sum += $value->commission;
}
echo $sum;
The cleanest solution IMO is to use reduce:
$total = array_reduce( commissionsArray, function ($sum, $entry) {
$sum += $entry->commission;
return $sum;
}, 0);
You can check it out here:
https://wtools.io/php-sandbox/b4nG
However, if your array contains arrays instead of objects, you can use a readable code (it works for objects if your php versions is prior to 8.0.0, but it is not a very good practice to use implicit cast):
array_sum(array_column($commissionsArray, 'importe_final'));
You can chack it out here:
https://wtools.io/php-sandbox/b4nK
Maybe it's too late, but you can use this code (min version: PHP 7.4):
$sum = array_sum(array_map(fn($item)=>$item->commission, $arrayOfObjects));
//commission is a property of your object which has one of the number types
In this example, we map array of objects to array of numbers, and then we can calculate sum of the array with array_sum.
