PHP - Manual: trader_var
2024-11-14
(PECL trader >= 0.2.0)
trader_var — Variance
$real
, int $timePeriod
= ?, float $nbDev
= ?): array
real
浮点数数组。
timePeriod
Number of period. Valid range from 2 to 100000.
nbDev
Returns an array with calculated data or false on failure.