It's always returing an array of 0 to me
(PECL trader >= 0.2.0)
trader_ppo — Percentage Price Oscillator
$real
[, int $fastPeriod
[, int $slowPeriod
[, int $mAType
]]] ) : array
real浮点数数组。
fastPeriodNumber of period for the fast MA. Valid range from 2 to 100000.
slowPeriodNumber of period for the slow MA. Valid range from 2 to 100000.
mATypeType of Moving Average. TRADER_MA_TYPE_* series of constants should be used.
Returns an array with calculated data or false on failure.
It's always returing an array of 0 to me