Week of the Month

In my project work, I needed to find out whether the given date falls in 1st, 2nd, 3rd, 4th or 5th week of the given month. As usual, I googled for this solution and found many functions. http://www.hotscripts.com/forums/php/37900-week-number-month.html, http://stackoverflow.com/questions/5853380/php-get-number-of-week-for-month and http://mybroadband.co.za/vb/showthread.php/66311-Calculating-the-week-in-the-month-(PHP) are some of them. But, being lazy, I thought those functions were too complex, and there could be a simpler solution to this. So I spent some time and came up with this function. Here is the code.

	<?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 week_of_month($date) {
	$timestamp = strtotime($date);
	$year = date('Y', $timestamp);
	$month = date('m', $timestamp);
	$w1 = date('W', $timestamp); // current week of year
	$w2 = date('W', strtotime('first thursday of this month')); // week of year, as on first Thursday of given month
	return floor($w1-$w2+1);
	}
	week_of_month('2013-06-10');
	?>

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