哪个PHP函数可以返回当前日期/时间?
当前回答
<?php
echo "<b>".date('l\, F jS\, Y ')."</b>";
?>
像这样的指纹
2012年12月9日,星期天
其他回答
我们可以使用date函数设置默认时区:
<?php
date_default_timezone_set("Asia/Kolkata");
echo "Today is " . date("Y/m/d") . "<br>";
echo "Today is " . date("Y.m.d") . "<br>";
echo "Today is " . date("Y-m-d") . "<br>";
echo "Today is " . date("l");
echo "The time is " . date("h:i:sa");
?>
你可以使用$_SERVER['REQUEST_TIME']变量或time()函数。这两个函数都返回Unix时间戳。
大多数情况下,这两个解决方案将产生完全相同的Unix时间戳。它们之间的区别是$_SERVER['REQUEST_TIME']返回最近服务器请求的时间戳,而time()返回当前时间。根据应用程序的不同,这可能会在准确性上产生微小的差异,但在大多数情况下,这两种解决方案都足够了。
根据上面的示例代码,一旦获得Unix时间戳,您将希望格式化此信息。未格式化的Unix时间看起来像:1232659628
因此,为了得到一些可以工作的东西,您可以使用date()函数来格式化它。
关于date()函数的使用方法,PHP手册中有很好的参考资料。
例如,下面的代码返回一个日期:01/22/2009 04:35:00 pm:
echo date("m/d/Y h:i:s a", time());
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() |
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
<?php
echo "<b>".date('l\, F jS\, Y ')."</b>";
?>
像这样的指纹
2012年12月9日,星期天
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