(PECL trader >= 0.2.0)
trader_stochf — Stochastic Fast
$high,$low,$close,$fastK_Period = ?,$fastD_Period = ?,$fastD_MAType = ?
high高价，浮点数数组。
low低价，浮点数数组。
close收盘价，浮点数数组。
fastK_PeriodTime period for building the Fast-K line. Valid range from 1 to 100000.
fastD_PeriodSmoothing for making the Fast-D line. Valid range from 1 to 100000, usually set to 3.
fastD_MATypeType of Moving Average for Fast-D. TRADER_MA_TYPE_* series of constants should be used.
Returns an array with calculated data or false on failure.