DateTime::setISODate
date_isodate_set
(PHP 5 >= 5.2.0)
DateTime::setISODate -- date_isodate_set — Sets the ISO date
說明
物件導向風格
程序化風格
Set a date according to the ISO 8601 standard - using weeks and day offsets rather than specific dates.
參數
-
object -
僅為程序化風格：由 date_create() 回傳的 DateTime 類型的物件。此函式會修改這個物件。
-
year -
Year of the date.
-
week -
Week of the date.
-
day -
Offset from the first day of the week.
回傳值
回傳被修改的 DateTime 物件， 或者在失敗時回傳 FALSE.
更新日誌
| 版本 | 說明 |
|---|---|
| 5.3.0 | 將回傳值從NULL改為 DateTime 類型。 |
範例
Example #1 DateTime::setISODate() example
物件導向風格
<?php
$date = new DateTime();
$date->setISODate(2008, 2);
echo $date->format('Y-m-d') . "\n";
$date->setISODate(2008, 2, 7);
echo $date->format('Y-m-d') . "\n";
?>
程序化風格
<?php
$date = date_create();
date_isodate_set($date, 2008, 2);
echo date_format($date, 'Y-m-d') . "\n";
date_isodate_set($date, 2008, 2, 7);
echo date_format($date, 'Y-m-d') . "\n";
?>
上例將輸出：
2008-01-07 2008-01-13
Example #2 Values exceeding ranges are added to their parent values
<?php
$date = new DateTime();
$date->setISODate(2008, 2, 7);
echo $date->format('Y-m-d') . "\n";
$date->setISODate(2008, 2, 8);
echo $date->format('Y-m-d') . "\n";
$date->setISODate(2008, 53, 7);
echo $date->format('Y-m-d') . "\n";
?>
上例將輸出：
2008-01-13 2008-01-14 2009-01-04
Example #3 Finding the month a week is in
<?php
$date = new DateTime();
$date->setISODate(2008, 14);
echo $date->format('n');
?>
上例將輸出：
3
參見
- DateTime::setDate() - Sets the date
- DateTime::setTime() - Sets the time
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