得到多维数组的总和

Question

So i have an array which is created like this via a loop

foreach ($items as $item)
{
    $item_arr[$id]['count'] = $item->rowcount;
}

Now what i want to do is get the sum of the counts. I know i can just use $sum += $item->rowcount; but i was wondering if there was a more efficient way using something like this outside the loop when the foreach is done:

$sum = array_sum($item_arr[]['count']);

But that doesn't work says it doesn't like [], is there a way to do it or is the best way just to keep count in the foreach loop. Just would like to keep the code cleaner and more readable but maybe its a stupid question?

Answer 1

Where did $id come from?

the best would be $sum += $item->rowcount;

$sum = 0;
foreach ($items as $item) {
 $sum += $item->rowcount;
}
echo $sum;