Group 2d array rows by one column and sum another column

Question

I have a php array like this:

[
    ['url_id' => 2191238, 'time_spent' => 41],
    ['url_id' => 2191606, 'time_spent' => 215],
    ['url_id' => 2191606, 'time_spent' => 25]
]

How to get the SUM of time_spent based on group by url_id (using array_count_values?)?

Answer 1

Why not a simpler

$ts_by_url = array();
foreach($array as $data) {
    $ts_by_url[ $data['url_id'] ] += $data['time_spent'];
}