(PECL trader >= 0.2.0)
trader_ppo — Percentage Price Oscillator
$real
[, integer $fastPeriod
[, integer $slowPeriod
[, integer $mAType
]]] )
本函数还未编写文档，仅有参数列表。
real
fastPeriod
slowPeriod
mAType
Returns an array with calculated data or false on failure.