In PHP, is there an easy way to get the first and last date of a month?

Question

I need to get the first and last day of a month in the format YYYY-MM-DD given only the month and year. Is there a good, easy way to do this?

Answer 1

From here(get next month last day) that is marked as duplicated, so i can't add comment there, but people can got bad answers from there.

Correct one for last day of next month:

echo ((new DateTime(date('Y-m').'-01'))->modify('+1 month')->format('Y-m-t'));

Correct one for first day of next month:

echo ((new DateTime(date('Y-m').'-01'))->modify('+1 month')->format('Y-m-01'));

Code like this will be providing March from January, so that's not what could be expected.

echo ((new DateTime())->modify('+1 month')->format('Y-m-t'));