stats_stat_powersum
(PECL stats >= 1.0.0)
stats_stat_powersum — Returns the power sum of a vector
说明
stats_stat_powersum
( array
$arr
, float $power
) : float
Returns the sum of the power-th power of a vector represented as an array arr.
参数
-
arr -
The input array
-
power -
The power
返回值
Returns the power sum of the input array.