Formats DateTime for usage in JSON and MySQL Databases

DateTimeFormat.php

<?php

namespace MichelPi\Utils;

use DateTime;

class DateTimeFormat
{
  private static $_jsonFormatString = 'Y-m-d\\TH:i:s.v\\Z';
  private static $_mysqlFormatString = 'Y-m-d H:i:s';

  public static function toJsonString(DateTime $datetime): string
  {
    return $datetime->format(self::$_jsonFormatString);
  }

  public static function toMysqlString(DateTime $datetime): string
  {
    return $datetime->format(self::$_mysqlFormatString);
  }

  public static function fromJsonString(string $time): DateTime
  {
    return DateTime::createFromFormat(self::$_jsonFormatString, $time);
  }

  public static function fromMysqlString(string $time): DateTime
  {
    return DateTime::createFromFormat(self::$_mysqlFormatString, $time);
  }
}