37 lines
865 B
PHP
37 lines
865 B
PHP
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<?php
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declare (strict_types=1);
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namespace app\service\util;
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use app\service\ConfigService;
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use function GuzzleHttp\Psr7\str;
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/**
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* @author canny
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* @date 2023/10/20 15:28
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**/
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class PriceCalculatorService
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{
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public static function add($a, $b, $scale = 2): string
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{
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return bcadd((string)$a, (string)$b, $scale); // 保留两位小数
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}
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public static function subtract($a, $b, $scale = 2): string
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{
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return bcsub((string)$a, (string)$b, $scale);
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}
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public static function multiply($a, $b, $scale = 2): string
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{
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return bcmul((string)$a, (string)$b, $scale);
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}
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public static function divide($a, $b, $scale = 2): ?string
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{
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if (bccomp((string)$b, '0', 2) === 0) {
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throw new \Exception('不允许除以零');
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}
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return bcdiv((string)$a, (string)$b, $scale);
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}
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}
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