DateTimeImmutable::__construct
date_create_immutable
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
DateTimeImmutable::__construct -- date_create_immutable — Returns new DateTimeImmutable object
說明
物件導向風格
過程化風格
$datetime = "now", ?DateTimeZone $timezone = null): DateTimeImmutable|falseReturns new a DateTimeImmutable object.
參數
-
datetime -
日期/時間字串。正確格式的說明詳見 日期與時間格式。
Enter
"now"here to obtain the current time when using the$timezoneparameter. -
timezone -
A DateTimeZone object representing the timezone of
$datetime.If
$timezoneis omitted ornull, the current timezone will be used.注意:
The
$timezoneparameter and the current timezone are ignored when the$datetimeparameter either is a UNIX timestamp (e.g.@946684800) or specifies a timezone (e.g.2010-01-28T15:00:00+02:00).
返回值
Returns a new DateTimeImmutable instance.
過程化風格在失敗時返回 false。
錯誤／異常
Emits Exception in case of an error.
更新日誌
| 版本 | 說明 |
|---|---|
| 7.1.0 | From now on microseconds are filled with actual value. Not with '00000'. |
範例
示例 #1 DateTimeImmutable::__construct() example
物件導向風格
<?php
try {
$date = new DateTimeImmutable('2000-01-01');
} catch (Exception $e) {
echo $e->getMessage();
exit(1);
}
echo $date->format('Y-m-d');
?>
過程化風格
<?php
$date = date_create('2000-01-01');
if (!$date) {
$e = date_get_last_errors();
foreach ($e['errors'] as $error) {
echo "$error\n";
}
exit(1);
}
echo date_format($date, 'Y-m-d');
?>
以上例程會輸出：
2000-01-01
示例 #2 Intricacies of DateTimeImmutable::__construct()
<?php
// Specified date/time in your computer's time zone.
$date = new DateTimeImmutable('2000-01-01');
echo $date->format('Y-m-d H:i:sP') . "\n";
// Specified date/time in the specified time zone.
$date = new DateTimeImmutable('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 DateTimeImmutable();
echo $date->format('Y-m-d H:i:sP') . "\n";
// Current date/time in the specified time zone.
$date = new DateTimeImmutable(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 DateTimeImmutable('@946684800');
echo $date->format('Y-m-d H:i:sP') . "\n";
// Non-existent values roll over.
$date = new DateTimeImmutable('2000-02-30');
echo $date->format('Y-m-d H:i:sP') . "\n";
?>
以上例程的輸出類似於：
2000-01-01 00:00:00-05:00 2000-01-01 00:00:00+12:00 2010-04-24 10:24:16-04:00 2010-04-25 02:24:16+12:00 2000-01-01 00:00:00+00:00 2000-03-01 00:00:00-05:00