(PECL trader >= 0.2.0)
trader_cdldarkcloudcover — Dark Cloud Cover
$open,$high,$low,$close,$penetration = ?
open始値。実数値の配列。
high高値。実数値の配列。
low安値。実数値の配列。
close終値。実数値の配列。
penetrationPercentage of penetration of a candle within another candle.
Returns an array with calculated data or false on failure.