参考:这里有一个链接

由于使用夏令时，这比简单地在时间戳中添加或减去一天或一个月中的秒数更可靠。

PHP代码

// Assuming today is March 10th, 2001, 5:16:18 pm, and that we are in the
// Mountain Standard Time (MST) Time Zone

$today = date("F j, Y, g:i a");                 // March 10, 2001, 5:16 pm
$today = date("m.d.y");                         // 03.10.01
$today = date("j, n, Y");                       // 10, 3, 2001
$today = date("Ymd");                           // 20010310
$today = date('h-i-s, j-m-y, it is w Day');     // 05-16-18, 10-03-01, 1631 1618 6 Satpm01
$today = date('\i\t \i\s \t\h\e jS \d\a\y.');   // it is the 10th day.
$today = date("D M j G:i:s T Y");               // Sat Mar 10 17:16:18 MST 2001
$today = date('H:m:s \m \i\s\ \m\o\n\t\h');     // 17:03:18 m is month
$today = date("H:i:s");                         // 17:16:18
$today = date("Y-m-d H:i:s");                   // 2001-03-10 17:16:18 (the MySQL DATETIME format)

日期格式也取决于:

echo date("d/m/Y H:i:sa"); // 13/04/2017 19:38:15pm

PHP以秒为单位返回当前时间。你需要把它们格式化成你想要的任何格式。

<?php
    // time() returns current time in seconds
    $in_seconds = time();

    // strftime - Format a local time/date according to locale settings
    echo strftime("%m/%d/%y", $in_seconds);
?>

参考:http://php.net/manual/en/function.strftime.php

Linux服务器时间与PHP time()时区差异如下:

<?php
    putenv("TZ=Asia/Kabul");
    $t = time();
    echo date('d/m/Y H:i:sa', $t);
?>

通常，date的这个函数对每个人都有用:date("Y/m/d");

但是时间是不同的，因为时间函数取决于PHP版本或系统日期。

所以可以像这样使用它来获得我们自己的时区:

$date = new DateTime('now', new DateTimeZone('Asia/Kolkata'));
echo $date->format('H:m:s');

这个函数显示24小时时间。

参考:这里有一个链接

由于使用夏令时，这比简单地在时间戳中添加或减去一天或一个月中的秒数更可靠。

PHP代码

// Assuming today is March 10th, 2001, 5:16:18 pm, and that we are in the
// Mountain Standard Time (MST) Time Zone

$today = date("F j, Y, g:i a");                 // March 10, 2001, 5:16 pm
$today = date("m.d.y");                         // 03.10.01
$today = date("j, n, Y");                       // 10, 3, 2001
$today = date("Ymd");                           // 20010310
$today = date('h-i-s, j-m-y, it is w Day');     // 05-16-18, 10-03-01, 1631 1618 6 Satpm01
$today = date('\i\t \i\s \t\h\e jS \d\a\y.');   // it is the 10th day.
$today = date("D M j G:i:s T Y");               // Sat Mar 10 17:16:18 MST 2001
$today = date('H:m:s \m \i\s\ \m\o\n\t\h');     // 17:03:18 m is month
$today = date("H:i:s");                         // 17:16:18
$today = date("Y-m-d H:i:s");                   // 2001-03-10 17:16:18 (the MySQL DATETIME format)