(PECL trader >= 0.2.0)
trader_correl — Pearson's Correlation Coefficient (r)
$real0
, array $real1
[, integer $timePeriod
] )
real0
浮点数数组。
real1
浮点数数组。
timePeriod
Number of period. Valid range from 2 to 100000.
Returns an array with calculated data or false on failure.