Created 07/2011
Countdown in to the first of the month in PHP
Result
It is 18 days until the first!Source Code:
<?php
$today = strtotime('today');
$day_of_month = (int)date('j', $today);
$days_in_this_month = (int)date('t', $today);
$days_until_the_first = $days_in_this_month - $day_of_month;
print "It is {$days_until_the_first} days until the first!";
?>