Php/docs/function.trader-var
From Get docs
trader_var
(PECL trader >= 0.2.0)
trader_var — Variance
Description
trader_var
( array $real
[, int $timePeriod
[, float $nbDev
]] ) : array
Parameters
real- Array of real values.
timePeriod- Number of period. Valid range from 2 to 100000.
nbDev
Return Values
Returns an array with calculated data or false on failure.
