(PECL trader >= 0.2.0)
trader_ppo — Percentage Price Oscillator
$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.