我有一个数组
Array
(
[activity] => Array
(
[0] => Array
(
[action] => open
[timestamp] => 2019-08-02T21:34:03+00:00
)
[1] => Array
(
[action] => open
[timestamp] => 2019-08-02T20:27:54+00:00
)
[2] => Array
(
[action] => click
[timestamp] => 2019-08-02T20:27:54+00:00
)
[3] => Array
(
[action] => open
[timestamp] => 2019-08-02T20:26:43+00:00
)
)
)
我想计算 action=open 的动作总数。所以结果将是 3
慕雪6442864