(PECL trader >= 0.2.0)
trader_correl — Pearson's Correlation Coefficient (r)
$real0
, array $real1
[, int $timePeriod
] ) : array
real0実数値の配列。
real1実数値の配列。
timePeriodNumber of period. Valid range from 2 to 100000.
Returns an array with calculated data or false on failure.