哪个PHP函数可以返回当前日期/时间?
当前回答
设置时区:
date_default_timezone_set('Asia/Calcutta');
然后调用日期函数
$date = date('Y-m-d H:i:s');
其他回答
// Simply:
$date = date('Y-m-d H:i:s');
// Or:
$date = date('Y/m/d H:i:s');
// This would return the date in the following formats respectively:
$date = '2012-03-06 17:33:07';
// Or
$date = '2012/03/06 17:33:07';
/**
* This time is based on the default server time zone.
* If you want the date in a different time zone,
* say if you come from Nairobi, Kenya like I do, you can set
* the time zone to Nairobi as shown below.
*/
date_default_timezone_set('Africa/Nairobi');
// Then call the date functions
$date = date('Y-m-d H:i:s');
// Or
$date = date('Y/m/d H:i:s');
// date_default_timezone_set() function is however
// supported by PHP version 5.1.0 or above.
有关时区参考,请参见支持的时区列表。
对于新的PHP程序员来说,他们可能会困惑为什么有这么多方法来获取当前日期和时间,以及在他们的项目中使用哪一种方法。
1. date方法(PHP 4, PHP 5, PHP 7)
这是php中获取日期和时间的最常见和最简单的方法。
// set the default timezone to use. Available since PHP 5.1
date_default_timezone_set('UTC');
// Prints something like: Monday
echo date("l");
// Prints something like: Monday 8th of August 2005 03:12:46 PM
echo date('l jS \of F Y h:i:s A');
// Prints: July 1, 2000 is on a Saturday
echo "July 1, 2000 is on a " . date("l", mktime(0, 0, 0, 7, 1, 2000));
/* use the constants in the format parameter */
// prints something like: Wed, 25 Sep 2013 15:28:57 -0700
echo date(DATE_RFC2822);
// prints something like: 2000-07-01T00:00:00+00:00
echo date(DATE_ATOM, mktime(0, 0, 0, 7, 1, 2000));
你可以在这里了解更多
2. DateTime类(PHP 5 >= 5.2.0, PHP 7)
当你想在OOP中使用PHP时,这是获取日期和时间的最佳方式。
<?php
// Specified date/time in your computer's time zone.
$date = new DateTime('2000-01-01');
echo $date->format('Y-m-d H:i:sP') . "\n";
// Specified date/time in the specified time zone.
$date = new DateTime('2000-01-01', new DateTimeZone('Pacific/Nauru'));
echo $date->format('Y-m-d H:i:sP') . "\n";
// Current date/time in your computer's time zone.
$date = new DateTime();
echo $date->format('Y-m-d H:i:sP') . "\n";
// Current date/time in the specified time zone.
$date = new DateTime(null, new DateTimeZone('Pacific/Nauru'));
echo $date->format('Y-m-d H:i:sP') . "\n";
// Using a UNIX timestamp. Notice the result is in the UTC time zone.
$date = new DateTime('@946684800');
echo $date->format('Y-m-d H:i:sP') . "\n";
// Non-existent values roll over.
$date = new DateTime('2000-02-30');
echo $date->format('Y-m-d H:i:sP') . "\n";
?>
你可以在这里了解更多
3.碳日期时间套餐
如果你正在使用Composer, Laravel, Symfony或任何类型的框架,这是获得日期和时间的最佳方式。此外,这个包扩展了php中的DateTime类,因此您可以使用DateTime类中的所有方法。 这个内置的框架像laravel,所以你不需要单独安装它。
printf("Right now is %s", Carbon::now()->toDateTimeString());
printf("Right now in Vancouver is %s", Carbon::now('America/Vancouver')); // automatically converted to string
$tomorrow = Carbon::now()->addDay();
$lastWeek = Carbon::now()->subWeek();
// Carbon embed 823 languages:
echo $tomorrow->locale('fr')->isoFormat('dddd, MMMM Do YYYY, h:mm');
echo $tomorrow->locale('ar')->isoFormat('dddd, MMMM Do YYYY, h:mm');
$officialDate = Carbon::now()->toRfc2822String();
$howOldAmI = Carbon::createFromDate(1975, 5, 21)->age;
$noonTodayLondonTime = Carbon::createFromTime(12, 0, 0, 'Europe/London');
$internetWillBlowUpOn = Carbon::create(2038, 01, 19, 3, 14, 7, 'GMT');
if (Carbon::now()->isWeekend()) {
echo 'Party!';
}
echo Carbon::now()->subMinutes(2)->diffForHumans(); // '2 minutes ago'
你可以在这里了解更多
希望这对你有所帮助,如果你知道任何其他获取日期和时间的方法,请随意编辑答案。
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);
?>
您的国家时区:支持的时区列表
date_default_timezone_set('Asia/Kolkata');
$dateYmd = date('Y-m-d');
echo "Current Year Month Day: $dateYmd";
本年月日:2022-01-03
$datehms = date('h:i:s');
echo "Current Hour Minute Second: $datehms";
当前小时分秒:11:05:38
使用date()和DateTimeInterface::format格式化日期,即date('Y-m-d H:i:s');,你有这些可选格式:
来源:DateTimeInterface:::格式页面。
format character | Description | Example returned values |
---|---|---|
Day | --- | --- |
d | Day of the month, 2 digits with leading zeros | 01 to 31 |
D | A textual representation of a day, three letters | Mon through Sun |
j | Day of the month without leading zeros | 1 to 31 |
l (lowercase 'L') | A full textual representation of the day of the week | Sunday through Saturday |
N | ISO 8601 numeric representation of the day of the week | 1 (for Monday) through 7 (for Sunday) |
S | English ordinal suffix for the day of the month, 2 characters | st, nd, rd or th. Works well with j |
w | Numeric representation of the day of the week | 0 (for Sunday) through 6 (for Saturday) |
z | The day of the year (starting from 0) | 0 through 365 |
Week | --- | --- |
W | ISO 8601 week number of year, weeks starting on Monday | Example: 42 (the 42nd week in the year) |
Month | --- | --- |
F | A full textual representation of a month, such as January or March | January through December |
m | Numeric representation of a month, with leading zeros | 01 through 12 |
M | A short textual representation of a month, three letters | Jan through Dec |
n | Numeric representation of a month, without leading zeros | 1 through 12 |
t | Number of days in the given month | 28 through 31 |
Year | --- | --- |
L | Whether it's a leap year | 1 if it is a leap year, 0 otherwise. |
o | ISO 8601 week-numbering year. This has the same value as Y, except that if the ISO week number (W) belongs to the previous or next year, that year is used instead. | Examples: 1999 or 2003 |
X | An expanded full numeric representation of a year, at least 4 digits, with - for years BCE, and + for years CE. | Examples: -0055, +0787, +1999, +10191 |
x | An expanded full numeric representation if requried, or a standard full numeral representation if possible (like Y). At least four digits. Years BCE are prefixed with a -. Years beyond (and including) 10000 are prefixed by a +. | Examples: -0055, 0787, 1999, +10191 |
Y | A full numeric representation of a year, at least 4 digits, with - for years BCE. | Examples: -0055, 0787, 1999, 2003, 10191 |
y | A two digit representation of a year | Examples: 99 or 03 |
Time | --- | --- |
a | Lowercase Ante meridiem and Post meridiem | am or pm |
A | Uppercase Ante meridiem and Post meridiem | AM or PM |
B | Swatch Internet time | 000 through 999 |
g | 12-hour format of an hour without leading zeros | 1 through 12 |
G | 24-hour format of an hour without leading zeros | 0 through 23 |
h | 12-hour format of an hour with leading zeros | 01 through 12 |
H | 24-hour format of an hour with leading zeros | 00 through 23 |
i | Minutes with leading zeros | 00 to 59 |
s | Seconds with leading zeros | 00 through 59 |
u | Microseconds. Note that date() will always generate 000000 since it takes an int parameter, whereas DateTime::format() does support microseconds if DateTime was created with microseconds. | Example: 654321 |
v | Milliseconds. Same note applies as for u. | Example: 654 |
Timezone | --- | --- |
e | Timezone identifier | Examples: UTC, GMT, Atlantic/Azores |
I (capital i) | Whether or not the date is in daylight saving time | 1 if Daylight Saving Time, 0 otherwise. |
O | Difference to Greenwich time (GMT) without colon between hours and minutes | Example: +0200 |
P | Difference to Greenwich time (GMT) with colon between hours and minutes | Example: +02:00 |
p | The same as P, but returns Z instead of +00:00 (available as of PHP 8.0.0) | Examples: Z or +02:00 |
T | Timezone abbreviation, if known; otherwise the GMT offset. | Examples: EST, MDT, +05 |
Z | Timezone offset in seconds. The offset for timezones west of UTC is always negative, and for those east of UTC is always positive. | -43200 through 50400 |
Full Date/Time | --- | --- |
c | ISO 8601 date | 2004-02-12T15:19:21+00:00 |
r | » RFC 2822/» RFC 5322 formatted date | Example: Thu, 21 Dec 2000 16:01:07 +0200 |
U | Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) | See also time() |
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