46 lines
1.5 KiB
PHP
46 lines
1.5 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Support;
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/**
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* 将「最小货币单位」整数格式化为展示用字符串（不改变业务数字，仅格式化）。
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*
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* 拆分位数由 {@see config('lottery.ui.format.currency.decimals')} 决定，默认 2（即 ÷100）。
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*/
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final class CurrencyFormatter
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{
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public static function fromMinor(int|string|null $minor): string
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{
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if ($minor === null || $minor === '') {
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return self::formatMinorInt(0);
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}
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return self::formatMinorInt((int) $minor);
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}
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private static function formatMinorInt(int $minorUnits): string
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{
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$decimals = max(0, min(12, (int) config('lottery.ui.format.currency.decimals', 2)));
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$decSep = (string) config('lottery.ui.format.currency.decimal_separator', '.');
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$thousandsSep = (string) config('lottery.ui.format.currency.thousands_separator', ',');
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$divisor = (int) max(1, 10 ** $decimals);
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$negative = $minorUnits < 0;
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$abs = abs($minorUnits);
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$integerPart = intdiv($abs, $divisor);
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$fractionRaw = $abs % $divisor;
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$fractionPadded = str_pad((string) $fractionRaw, $decimals, '0', STR_PAD_LEFT);
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$integerPartFormatted = number_format((float) $integerPart, 0, $decSep, $thousandsSep);
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if ($decimals === 0) {
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return ($negative ? '-' : '').$integerPartFormatted;
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}
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return ($negative ? '-' : '').$integerPartFormatted.$decSep.$fractionPadded;
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}
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}
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