我在两个日期之间得到无效间隔

Question

我在两个日期时间之间得到无效的间隔

$date = new \DateTime();
$zurich = new DateTimeZone('Asia/Kolkata');
$datetimeFormat = 'Y-m-d H:i:s';
$date->setTimestamp($request->travel_time);
$d1 = $date->format($datetimeFormat);
$date2 = new \DateTime();
$d2 = $alreadyCreatedRoute[0]->travel_time;
$datetime1 = new DateTime($d2,$zurich);
$datetime2 = new DateTime($d1,$zurich);
$interval = $datetime1->diff($datetime2);
 `echo $diff_in_minutes = $interval->format('%h')." Hours ".$interval->format('%i')." Minutes";`
**DateTime Object([date] => 2018-02-12 10:19:11.000000 [timezone_type] =>3
    [timezone] => Asia/Kolkata**
)
**DateTime Object([date] => 2018-02-12 00:11:00.000000 [timezone_type] =>3
    [timezone] => Asia/Kolkata)**

Answer 1

我不确定你到底想要什么但是如果它的日期差异那么这里是找到2 DateTime之间差异的代码

class Insurance
{
    private int customers;

    public Insurance(string agent, int customers)
    {
        Agent = Agent;
        Customers = Customers;
    }

    public string Agent { get; set; }

    public int Customers
    {
        get { return customers; }
        set { customers = Math.Max(value, 0); }
    }
}