PHP マニュアル

trader_roc

Rate of change : ((price/prevPrice)-1)*100

説明

array trader_roc(array $real, int $timePeriod = ?)

パラメータ

real: 実数値の配列。
timePeriod: Number of period. Valid range from 2 to 100000.

戻り値

Returns an array with calculated data or false on failure.