php group by SUM 使用多维数组 [英] php group by SUM using multi dimensional array

问题描述

我有一个这样的 php 数组:

I have a php array like this:

 Array
    (
        [0] => Array
            (
                [url_id] => 2191238
                [time_spent] => 41

            )

        [1] => Array
            (
                [url_id] => 2191606
                [time_spent] => 215

            )
        [2] => Array
            (
                [url_id] => 2191606
                [time_spent] => 25

            )
    )

那么，如何通过url_id(使用array_count_values)根据group获取time_spent的SUM

So, how to get the SUM of time_spent based on group by url_id (using array_count_values)

推荐答案

为什么不更简单

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

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