MongoDB无法获得总数。PHP mongodb总和查询
MYSQL:
select sum(play) as toplam from videos
的MongoDB:
$group = $naytu->db->videos->group(array(), array("toplam" => 0), "function(obj, prev) {prev.toplam = prev.toplam + obj.play - 0;}");
结果(的print_r)
Array
(
[retval] => Array
(
[0] => Array
(
[toplam] => NAN
)
)
[count] => 78656
[keys] => 1
[ok] => 1
)
问题出在哪里?
谢谢:)好的! :) – user3342378