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

First day is always YYYY-MM-01, isn't it? Example: date("Y-M-d", mktime(0, 0, 0, 8, 1, 2008))

Last day is the previous day of the next month's first day:

$date = new DateTime("2008-09-01");
$date->modify("-1 day");
echo $date->format("Y-m-d");