Php/docs/function.trader-roc
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trader_roc
(PECL trader >= 0.2.0)
trader_roc — Rate of change : ((price/prevPrice)-1)*100
说明
trader_roc
( array $real
[, int $timePeriod
] ) : array
参数
real
- 浮点数数组。
timePeriod
- Number of period. Valid range from 2 to 100000.
返回值
Returns an array with calculated data or false on failure.