- Output for 7.0.19, 7.3.24 - 7.3.33, 7.4.12 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- 3
<?php
$objects = [
[ 'amount' => 1],
[ 'amount' => 2],
[ 'amount' => null],
];
$sum = array_sum(array_column($objects,'amount'));
echo $sum;