Timestamps of start and end of month

Question

How can one get the timestamps of the first and last minutes of any month using PHP?

Answer 1

With PHP 5.3, you can do

$oFirst = new DateTime('first day of this month');
$oLast  = new DateTime('last day of this month');
$oLast->setTime(23, 59, 59);

In PHP 5.2

Note: as AllThecode pointed out in the comments below, this next example only works if you do the $oFirst portion first. If you add +1 month to new DateTime the result will jump an extra month ahead on the last day of the month (as of php 5.5.9).

$oToday = new DateTime();
$iTime  = mktime(0, 0, 0, $oToday->format('m'), 1, $oToday->format('Y'));
$oFirst = new DateTime(date('r', $iTime));

$oLast  = clone $oFirst;
$oLast->modify('+1 month');
$oLast->modify('-1 day');
$oLast->setTime(23, 59, 59);