Question

my code:

foreach($comment as $key => $value) {

$total = $value['likes'];

echo "$key: $total\n"

}

Outputs:

0: 3 1: 18 2: 72 3: 0 4: 10 5: 0 6: 0 7: 0 8: 0 9: 0 10: 0 11: 19 12: 0 13: 0 14: 14 15: 19 16: 0 17: 0 18: 1

How do I sum all the values? The array_sum function gives a “warning: expects parameter 1 to be array, integer given”.

Answer 1

Array_sum is expecting a single dimension array. From the looks of your code you have a multi-dimensional array. Where $value is an array too.

You have the right idea with the total, but you have to add to your total like this $total = $total + $value['likes'], or the shorthanded version $total += $value['likes']:

$total = 0;

foreach($comment as $key => $value) {

    $total += $value['likes'];

    echo "$key: $total\n"

}

echo "My total is: $total";