PHP function to check if today’s day occurs for the last time in current month.

is_last_occurance.php

<?php
/**
* Copyright (C) 2016 Prabhas Gupte
* 
* This is free script: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* 
* This script is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
* 
* You should also see <http://www.gnu.org/licenses/gpl.txt>
*/

function is_last_occurance($day) {
	$month_this_day = date("n");
	$month_next_day = date("n", strtotime("next $day"));

	  return $month_this_day!=$month_next_day?true:false;
}// is_last_occurance

is_last_occurance('Mon');
is_last_occurance('Sunday');
?>