timePeriod can be from 1 (not from 2)
Working correctly, and tis is common need to calculate change from previos period.
PHP - Manual: trader_rocr
2024-11-15
(PECL trader >= 0.2.0)
trader_rocr — Rate of change ratio: (price/prevPrice)
$real
, int $timePeriod
= ?): array
real
浮点数数组。
timePeriod
Number of period. Valid range from 2 to 100000.
Returns an array with calculated data or false on failure.
timePeriod can be from 1 (not from 2)
Working correctly, and tis is common need to calculate change from previos period.