trader_rocr

(PECL trader >= 0.2.0)

trader_rocrRate of change ratio: (price/prevPrice)

说明

trader_rocr(array $real, int $timePeriod = ?): array

参数

real

浮点数数组。

timePeriod

Number of period. Valid range from 2 to 100000.

返回值

Returns an array with calculated data or false on failure.

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