# trader_sar

(PECL trader >= 0.2.0)

trader_sar — Parabolic SAR

### 说明

trader_sar ( array `$high` , array `$low` [, float `$acceleration` [, float `$maximum` ]] ) : array

### 参数

`high`

  高价，浮点数数组。

`low`

  低价，浮点数数组。

`acceleration`

  Acceleration Factor used up to the Maximum value. Valid range from 0 to TRADER_REAL_MAX.

`maximum`

  Acceleration Factor Maximum value. Valid range from 0 to TRADER_REAL_MAX.

### 返回值

Returns an array with calculated data or false on failure.