Trader 函数
PHP Manual

trader_rocr

(PECL trader >= 0.2.0)

trader_rocrRate of change ratio: (price/prevPrice)

说明

array trader_rocr ( array $real [, integer $timePeriod ] )

参数

real

Array of real values.

timePeriod

Number of period. Valid range from 2 to 100000.

返回值

Returns an array with calculated data or false on failure.


Trader 函数
PHP Manual