描述不清，直接上程式碼

$data = array(
	array('time'=>'2018-10-15','money'=>1,'count'=>5),
	array('time'=>'2018-10-16','money'=>2,'count'=>4),
	array('time'=>'2018-10-17','money'=>3,'count'=>3),
	array('time'=>'2018-10-19','money'=>5,'count'=>1),
	array('time'=>'2018-10-18','money'=>4,'count'=>2),
);

p($data);	//列印一

$money = 0;
$count = 0;
foreach($data as $k=>$v){
	$data[$k]['money'] = $v['money'] + $money;
	$data[$k]['count'] = $v['count'] + $count;
	$money = $v['money'] + $money;
	$count = $v['count'] + $count;
}

p($data);	//列印二
 

列印一：

Array
(
    [0] => Array
        (
            [time] => 2018-10-15
            [money] => 1
            [count] => 5
        )

    [1] => Array
        (
            [time] => 2018-10-16
            [money] => 2
            [count] => 4
        )

    [2] => Array
        (
            [time] => 2018-10-17
            [money] => 3
            [count] => 3
        )

    [3] => Array
        (
            [time] => 2018-10-19
            [money] => 5
            [count] => 1
        )

    [4] => Array
        (
            [time] => 2018-10-18
            [money] => 4
            [count] => 2
        )

)
 

列印二：

Array
(
    [0] => Array
        (
            [time] => 2018-10-15
            [money] => 1
            [count] => 5
        )

    [1] => Array
        (
            [time] => 2018-10-16
            [money] => 3
            [count] => 9
        )

    [2] => Array
        (
            [time] => 2018-10-17
            [money] => 6
            [count] => 12
        )

    [3] => Array
        (
            [time] => 2018-10-19
            [money] => 11
            [count] => 13
        )

    [4] => Array
        (
            [time] => 2018-10-18
            [money] => 15
            [count] => 15
        )

)