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<?php
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namespace App\Support;
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use Carbon\CarbonInterface;
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/** 业务展示时间统一按北京时间输出。 */
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final class BizDateTime
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{
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public const TIMEZONE = 'Asia/Shanghai';
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public static function toIso8601(?CarbonInterface $dt): ?string
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{
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return $dt?->copy()->timezone(self::TIMEZONE)->toIso8601String();
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}
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}
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