It's always returing an array of 0 to me
(PECL trader >= 0.2.0)
trader_ppo — Percentage Price Oscillator
real
実数値の配列。
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.