$price = Yii::$service->helper->format->numberFormat($price * $currencyInfo['rate']);
得知这里控制前台显示小数点后几位 找到format文件修改2位4
/**
* @param $number | Float
* @param $bits | Int
* @return $number | Float
* 返回格式化形式的float小数,譬如2 会变成2.00
*/
public function numberFormat($number, $bits = 4)
{
return number_format($number, $bits, '.', '');
}