Php/docs/function.trader-bbands

• PHP Manual
• Trader 函数
• Bollinger Bands

trader_bbands

(PECL trader >= 0.2.0)

trader_bbands — Bollinger Bands

说明

trader_bbands ( array $real [, int $timePeriod [, float $nbDevUp [, float $nbDevDn [, int $mAType ]]]] ) : array

参数

real

浮点数数组。

timePeriod

Number of period. Valid range from 2 to 100000.

nbDevUp

Deviation multiplier for upper band. Valid range from TRADER_REAL_MIN to TRADER_REAL_MAX.

nbDevDn

Deviation multiplier for lower band. Valid range from TRADER_REAL_MIN to TRADER_REAL_MAX.

mAType

Type of Moving Average. TRADER_MA_TYPE_* series of constants should be used.

返回值

Returns an array with calculated data or false on failure.