## 运行时配置

这些函数的行为受 php.ini 中的设置影响。

Trader 配置选项
名字 | 默认 | 可修改范围 | 更新日志
--- | --- | --- | ---
trader.real_precision | 3 | `INI_ALL` | Since trader 0.2.1
trader.real_round_mode | HALF_DOWN | `INI_ALL` | Since trader 0.3.0

这是配置指令的简短说明。

`trader.real_precision` int

  All the values in the returned arrays will be rounded to this precision. However the calculations inside TA-Lib happen with unrounded values.

`trader.real_round_mode` string

  Controls the trader real rounding policy. Valid values are `HALF_UP`, `HALF_DOWN`, `HALF_EVEN` and `HALF_ODD`. The behaviour is identical to the round() function used with the mode argument.

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