Question

如何在一个页面上显示3个不同的datetime个对象？以下代码仅返回服务器日期（第一项）并解除所有其他日期。

此脚本的目的是显示用户位置的当前日期和时间，包括夏令时（意味着特定地点的实际时间，而不仅仅是GMT +他们应该在的时区）。

$server_datetime = new DateTime();  //located in America/New_York timezone - GMT-5
echo "Current Server DateTime: " . $server_datetime->format('Y-m-d H:i:s');

echo "<hr>";

$usersTimezone1 = 'Europe/London';  // GMT-0
$user_datetime1 = new DateTime(new DateTimeZone($usersTimezone1) );
echo "London User DateTime: " . $user_datetime1->format('Y-m-d H:i:s');

echo "<hr>";

$usersTimezone2 = 'Asia/Shanghai';  // GMT+8
$user_datetime2 = new DateTime(new DateTimeZone($usersTimezone2) );
echo "Shanghai User DateTime: " . $user_datetime2->format('Y-m-d H:i:s');

echo "<hr>";

Answer 1

消息：DateTime :: __ construct（）期望参数1为字符串，对象

DateTimeZone对象应该是第二个参数。

$server_datetime = new DateTime();  //located in America/New_York timezone - GMT-5
echo "Current Server DateTime: " . $server_datetime->format('Y-m-d H:i:s');

$usersTimezone1 = 'Europe/London';  // GMT-0
$user_datetime1 = new DateTime( 'now', new DateTimeZone($usersTimezone1) );
echo "London User DateTime: " . $user_datetime1->format('Y-m-d H:i:s');

$usersTimezone2 = 'Asia/Shanghai';  // GMT+8
$user_datetime2 = new DateTime( 'now', new DateTimeZone($usersTimezone2) );
echo "Shanghai User DateTime: " . $user_datetime2->format('Y-m-d H:i:s');

Answer 2

   $server_datetime = new DateTime();  //located in America/New_York timezone - GMT-5
    echo "Current Server DateTime: " . $server_datetime->format('Y-m-d H:i:s');

    echo "<hr>";

    date_default_timezone_set('Europe/London');
    $user_datetime = new DateTime();
    echo "London User DateTime: " . $user_datetime->format('Y-m-d H:i:s');

    echo "<hr>";

    date_default_timezone_set('Asia/Shanghai'); // GMT+8
    $user_datetime2 = new DateTime();
    echo "Shanghai User DateTime: " . $user_datetime2->format('Y-m-d H:i:s');

    echo "<hr>";

输出是：

    Current Server DateTime: 2017-03-14 06:22:59

    London User DateTime: 2017-03-14 05:22:59

    Shanghai User DateTime: 2017-03-14 13:22:59

Answer 3

@ Armitage2k试试这个：

<?php
$server_datetime = new DateTime();
echo "Current Server DateTime: " . $server_datetime->format('Y-m-d H:i:s');
echo "<hr>";

$usersTimezone1 = 'Europe/London';  // GMT-0
$user_datetime1 = new DateTime();
$user_datetime1->setTimeZone(new DateTimeZone($usersTimezone1));
echo "London User DateTime: " . $user_datetime1->format('Y-m-d H:i:s');

echo "<hr>";


$usersTimezone2 = 'Asia/Shanghai';  // GMT+8
$user_datetime2 = new DateTime();
$user_datetime2->setTimeZone(new DateTimeZone($usersTimezone2));
echo "Shanghai User DateTime:" . $user_datetime2->format('Y-m-d H:i:s');

echo "<hr>";

新的日期时间 - 一次只有一个实例？

3 个答案: