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date

(PHP 4, PHP 5, PHP 7, PHP 8)

date — Format a Unix timestamp

Опис

date(string $format, ?int $timestamp = null): string

Returns a string formatted according to the given format string using the given integer timestamp (Unix timestamp) or the current time if no timestamp is given. In other words, timestamp is optional and defaults to the value of time().

Увага

Unix timestamps do not handle timezones. Use the DateTimeImmutable class, and its DateTimeInterface::format() formatting method to format date/time information with a timezone attached.

Параметри

format

Format accepted by DateTimeInterface::format().

Зауваження: date() will always generate 000000 as microseconds since it takes an int parameter, whereas DateTimeInterface::format() does support microseconds if an object of type DateTimeInterface was created with microseconds.

timestamp

Необов'язковий параметр timestamp — це позначка часу Unix типу int, яка стандартно дорівнює поточному місцевому часу, якщо timestamp не вказаний або null. Тобто є результатом функції time().

Значення, що повертаються

Returns a formatted date string.

Помилки/виключення

Якщо часовий пояс хибний, то під час кожного виклику функції дати/часу виникатиме E_WARNING. Див. date_default_timezone_set().

Журнал змін

Версія Опис
8.0.0 timestamp is nullable now.

Приклади

Приклад #1 date() examples

<?php
// set the default timezone to use.
date_default_timezone_set('UTC');


// Prints something like: Monday
echo date("l") . "\n";

// Prints something like: Monday 8th of August 2005 03:12:46 PM
echo date('l jS \of F Y h:i:s A') . "\n";

// Prints: July 1, 2000 is on a Saturday
echo "July 1, 2000 is on a " . date("l", mktime(0, 0, 0, 7, 1, 2000)) . "\n";

/* use the constants in the format parameter */
// prints something like: Wed, 25 Sep 2013 15:28:57 -0700
echo date(DATE_RFC2822) . "\n";

// prints something like: 2000-07-01T00:00:00+00:00
echo date(DATE_ATOM, mktime(0, 0, 0, 7, 1, 2000));

You can prevent a recognized character in the format string from being expanded by escaping it with a preceding backslash. If the character with a backslash is already a special sequence, you may need to also escape the backslash.

Приклад #2 Escaping characters in date()

<?php
// prints something like: Wednesday the 15th
echo date('l \t\h\e jS');

Some examples of date() formatting. Note that you should escape any other characters, as any which currently have a special meaning will produce undesirable results, and other characters may be assigned meaning in future PHP versions. When escaping, be sure to use single quotes to prevent characters like \n from becoming newlines.

Приклад #3 date() Formatting

<?php
// Assuming today is March 10th, 2001, 5:16:18 pm, and that we are in the
// Mountain Standard Time (MST) Time Zone
date_default_timezone_set("America/Phoenix");

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

To format dates in other languages, IntlDateFormatter::format() can be used instead of date().

Примітки

Зауваження:

To generate a timestamp from a string representation of the date, you may be able to use strtotime(). Additionally, some databases have functions to convert their date formats into timestamps (such as MySQL's » UNIX_TIMESTAMP function).

Підказка

Timestamp of the start of the request is available in $_SERVER['REQUEST_TIME'].

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