stats_harmonic_mean
(PECL stats >= 1.0.0)
stats_harmonic_mean — Returns the harmonic mean of an array of values
Описание
stats_harmonic_mean
( array
$a
) : number
Returns the harmonic mean of the values in a.
Список параметров
-
a -
The input array
Возвращаемые значения
Returns the harmonic mean of the values in a,
or false if a is empty or is not an array.