View file File name : TimeUtil.php Content :<?php namespace Automattic\WooCommerce\Utilities; use \DateTime; use \DateTimeZone; use \Exception; /** * Class with date and time utilities. */ class TimeUtil { /** * Instance of a DateTimeZone object representing UTC. * * @var DateTimeZone */ private static DateTimeZone $utc_date_time_zone; /** * Class constructor. */ public function __construct() { self::$utc_date_time_zone = new DateTimeZone( 'UTC' ); } /** * Get the instance of the DateTimeZone object representing UTC. * * @return DateTimeZone DateTimeZone object representing UTC. */ public static function get_utc_date_time_zone(): DateTimeZone { return self::$utc_date_time_zone; } /** * Check if a string represents a valid date in a given format. * * @param string $date The date string to check. * @param string $format The format to verify the date string against. * @return bool True if $date represents a valid date/time according to $format, false otherwise. */ public static function is_valid_date( string $date, string $format = 'Y-m-d H:i:s' ): bool { $d = DateTime::createFromFormat( $format, $date ); return $d && $d->format( $format ) === $date; } }