(PECL trader >= 0.2.0)
trader_cdlshortline — Short Line Candle
$open
, array $high
, array $low
, array $close
)
open开盘价，浮点数数组。
high高价，浮点数数组。
low低价，浮点数数组。
close收盘价，浮点数数组。
Returns an array with calculated data or false on failure.