Add 'x' number of hours to date

问题

I currently have php returning the current date/time like so:

$now = date(\"Y-m-d H:m:s\");

What I\'d like to do is have a new variable $new_time equal $now + $hours, where $hours is a number of hours ranging from 24 to 800.

Any suggestions?

回答1:

You may use something like the strtotime() function to add something to the current timestamp. $new_time = date("Y-m-d H:i:s", strtotime('+5 hours')).

If you need variables in the function, you must use double quotes then like strtotime("+{$hours} hours"), however better you use strtotime(sprintf("+%d hours", $hours)) then.

回答2:

An other solution (object-oriented) is to use DateTime::add

Example:

$now = new DateTime(); //current date/time
$now->add(new DateInterval("PT{$hours}H"));
$new_time = $now->format('Y-m-d H:i:s');

PHP documentation.

回答3:

You can use strtotime() to achieve this:

$new_time = date("Y-m-d H:i:s", strtotime('+3 hours', $now)); // $now + 3 hours

回答4:

Correct

You can use strtotime() to achieve this:

$new_time = date("Y-m-d H:i:s", strtotime('+3 hours', strtotime($now))); // $now + 3 hours

回答5:

You can also use the unix style time to calculate:

$newtime = time() + ($hours * 60 * 60); // hours; 60 mins; 60secs
echo 'Now:       '. date('Y-m-d') ."\n";
echo 'Next Week: '. date('Y-m-d', $newtime) ."\n";

回答6:

Um... your minutes should be corrected... 'i' is for minutes. Not months. :) (I had the same problem for something too.

$now = date("Y-m-d H:i:s");
$new_time = date("Y-m-d H:i:s", strtotime('+3 hours', $now)); // $now + 3 hours

回答7:

You can try lib Ouzo goodies, and do this in fluent way:

echo Clock::now()->plusHours($hours)->format("Y-m-d H:m:s");

API's allow multiple operations.

回答8:

I use this , its working cool.

//set timezone
date_default_timezone_set('GMT');

//set an date and time to work with
$start = '2014-06-01 14:00:00';

//display the converted time
echo date('Y-m-d H:i',strtotime('+1 hour +20 minutes',strtotime($start)));

回答9:

$date_to_be-added="2018-04-11 10:04:46";
$added_date=date("Y-m-d H:i:s",strtotime('+24 hours', strtotime($date_to_be)));

A combination of date() and strtotime() functions will do the trick.

回答10:

I use following function to convert normal date-time value to mysql datetime format.

private function ampmtosql($ampmdate) {
            if($ampmdate == '')
                return '';
            $ampm = substr(trim(($ampmdate)), -2);
            $datetimesql = substr(trim(($ampmdate)), 0, -3);
            if ($ampm == 'pm') {
                $hours = substr(trim($datetimesql), -5, 2);
                if($hours != '12')
                    $datetimesql = date('Y-m-d H:i',strtotime('+12 hour',strtotime($datetimesql)));
            }
            elseif ($ampm == 'am') {
                $hours = substr(trim($datetimesql), -5, 2);
                if($hours == '12')
                    $datetimesql = date('Y-m-d H:i',strtotime('-12 hour',strtotime($datetimesql)));
            }
            return $datetimesql;
        }

It converts datetime values like,

2015-06-04 09:55 AM -> 2015-06-04 09:55
2015-06-04 03:55 PM -> 2015-06-04 15:55
2015-06-04 12:30 AM -> 2015-06-04 00:55

Hope this will help someone.

回答11:

   $now = date("Y-m-d H:i:s");
   date("Y-m-d H:i:s", strtotime("+1 hours $now"));

来源：https://stackoverflow.com/questions/11386308/add-x-number-of-hours-to-date