[英]How to find the date of a day of the week from a date using PHP?
If I've got a $date
YYYY-mm-dd
and want to get a specific $day
(specified by 0 (sunday) to 6 (saturday)) of the week that YYYY-mm-dd
is in. 如果我有一个
$date
YYYY-mm-dd
,并希望得到一个特定的$day
(0(星期日指定)至6日(星期六))在本周的YYYY-mm-dd
在不在。
For example, if I got 2012-10-11
as $date
and 5
as $day
, I want to get 2012-10-12
, if I've got 0
as $day
, 2012-10-14
例如,如果我把
2012-10-11
作为$date
和5
作为$day
,我想得到2012-10-12
,如果我有0
作为$day
, 2012-10-14
EDIT: 编辑:
Most of you misunderstood it. 大多数人误解了它。 I got some date,
$date
and want to get a day specified by 0-6 of the same week $date
is in. 我得到了一些约会,
$date
并希望得到同一周0-6指定的$date
。
So no, I don't want the day of $date
... 所以不,我不想要
$date
...
I think this is what you want. 我想这就是你想要的。
$dayofweek = date('w', strtotime($date));
$result = date('Y-m-d', strtotime(($day - $dayofweek).' day', strtotime($date)));
You can use the date() function: 您可以使用date()函数:
date('w'); // day of week
or 要么
date('l'); // dayname
Example function to get the day nr.: 得到一天的示例函数nr。:
function getWeekday($date) {
return date('w', strtotime($date));
}
echo getWeekday('2012-10-11'); // returns 4
Try 尝试
$date = '2012-10-11';
$day = 1;
$days = array('Sunday', 'Monday', 'Tuesday', 'Wednesday','Thursday','Friday', 'Saturday');
echo date('Y-m-d', strtotime($days[$day], strtotime($date)));
Just: 只是:
2012-10-11 as $date and 5 as $day 2012-10-11为$ date,5为$ day
<?php
$day=5;
$w = date("w", strtotime("2011-01-11")) + 1; // you must add 1 to for Sunday
echo $w;
$sunday = date("Y-m-d", strtotime("2011-01-11")-strtotime("+$w day"));
$result = date("Y-m-d", strtotime($sunday)+strtotime("+$day day"));
echo $result;
?>
The $result = '2012-10-12' is what you want. $ result ='2012-10-12'就是你想要的。
If your date is already a DateTime
or DateTimeImmutable
you can use the format
method. 如果您的日期已经是
DateTime
或DateTimeImmutable
,则可以使用format
方法。
$day_of_week = intval($date_time->format('w'));
The format string is identical to the one used by the date function. 格式字符串与date函数使用的格式字符串相同。
To answer the intended question: 要回答预期的问题:
$date_time->modify($target_day_of_week - $day_of_week . ' days');
PHP Manual said : PHP手册说:
w Numeric representation of the day of the week
w星期几的数字表示
You can therefore construct a date with mktime, and use in it date("w", $yourTime);
因此,您可以使用mktime构建日期,并在其中使用
date("w", $yourTime);
I'm afraid you have to do it manually. 我担心你必须手动完成。 Get the date's current day of week, calculate the offset and add the offset to the date.
获取日期的当前星期几,计算偏移量并将偏移量添加到日期。
$current = date("w", $date)
$offset = $day - $current
$new_date = new DateTime($date)
->add(
new DateInterval($offset."D")
)->format('Y-m-d')
I had to use a similar solution for Portuguese (Brazil): 我不得不为葡萄牙语(巴西)使用类似的解决方案:
<?php
$scheduled_day = '2018-07-28';
$days = ['Dom','Seg','Ter','Qua','Qui','Sex','Sáb'];
$day = date('w',strtotime($scheduled_day));
$scheduled_day = date('d-m-Y', strtotime($scheduled_day))." ($days[$day])";
// provides 28-07-2018 (Sáb)
<?php echo date("H:i", time()); ?>
<?php echo $days[date("l", time())] . date(", d.m.Y", time()); ?>
Simple, this should do the trick 很简单,这应该可以解决问题
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