trader_ppo

(PECL trader >= 0.2.0)

trader_ppo — Percentage Price Oscillator

array trader_ppo ( array $real [, integer $fastPeriod [, integer $slowPeriod [, integer $mAType ]]] )

real: 浮点数数组。
fastPeriod: Number of period for the fast MA. Valid range from 2 to 100000.
slowPeriod: Number of period for the slow MA. Valid range from 2 to 100000.
mAType: Type of Moving Average. TRADER_MA_TYPE_* series of constants should be used.

Returns an array with calculated data or false on failure.