<?php

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namespace Automattic\WooCommerce\Utilities;

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use \DateTime;

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use \DateTimeZone;

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use \Exception;

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/**

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* Class with date and time utilities.

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*/

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class TimeUtil {

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/**

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* Instance of a DateTimeZone object representing UTC.

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*

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* @var DateTimeZone

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*/

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private static DateTimeZone $utc_date_time_zone;

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/**

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* Class constructor.

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*/

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public function __construct() {

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self::$utc_date_time_zone = new DateTimeZone( 'UTC' );

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}

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/**

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* Get the instance of the DateTimeZone object representing UTC.

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*

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* @return DateTimeZone DateTimeZone object representing UTC.

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*/

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public static function get_utc_date_time_zone(): DateTimeZone {

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return self::$utc_date_time_zone;

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}

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/**

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* Check if a string represents a valid date in a given format.

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*

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* @param string $date The date string to check.

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* @param string $format The format to verify the date string against.

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* @return bool True if $date represents a valid date/time according to $format, false otherwise.

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*/

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public static function is_valid_date( string $date, string $format = 'Y-m-d H:i:s' ): bool {

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$d = DateTime::createFromFormat( $format, $date );

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return $d && $d->format( $format ) === $date;

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}

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}

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