Last day of next month in PHP or Laravel-CodePudding

When I try to get the last day of next month by PHP or Laravel carbon, everything is ok, but when I try to get the last day of next month from a specific date, 2023-01-31, by

date('Y-m-01', strtotime('next month', strtotime('2023-01-31')));

Carbon::createFromFormat('Y-m-d H:m:00:000', '2023-01-31')->addMonth()->format('Y-m-t H:m:00:000');

That time output results are given on 2023-03-31, but the last day of next month is 2023-02-28. So how can I solve it? It's not working correctly.

$instituter = Institute::where('code', $instInfo->institute_code)->first();
            // $institute = Carbon::createFromFormat('Y-m-d H:m:00:000', $institute->institute_expire)->addMonth()->format('Y-m-d H:m:00:000');
            // $expire = $instituter->institute_expire;
            // $inst = Carbon::createFromFormat('Y-m-d H:i:00.000', $instituter->institute_expire)->addMonths(6)->startOfMonth()->format('Y-m-d');
            $inst = date('Y-m-01', strtotime('next month', strtotime($instituter->institute_expire)));
            // $inst = Carbon::createFromFormat('Y-m-d H:i:00.000', $instituter->institute_expire)->addMonths(6)->startOfMonth();
            // $institute = Carbon::createFromFormat('m/d/Y', $instituter->institute_expire)->addMonth();

CodePudding user response：

You can use the endOfMonth() method in Carbon to get the last day of the next month, like the following.

$date = Carbon::createFromFormat('Y-m-d', '2023-01-31');
$nextMonth = $date->addMonth()->endOfMonth();
echo $nextMonth->format('Y-m-d');

This will output 2023-02-28.

CodePudding user response：

strtotime will do this ...

e.g.

echo date('c', strtotime('last day of next month'));

gives e.g. 2023-02-28T19:53:34 00:00, when today is 2023/01/21.

Alternatively -

ècho (new DateTime('last day of next month'))->format('c')

will also work

CodePudding user response：

$next_month_last_date = date("Y-m-t", strtotime(" 1 month"));

t => number of days in the month