How to get the first day of a given week number in PHP (multi-platform)?
<p>What is the simplest way to do it in PHP ?</p>

<p>I want the date of the Monday of a given week number of a year (example : week number 3 of 2009)</p>

<p>Thanks !</p>

<p>EDIT : If you use Linux only machines, use cletus' solution, however I am looking for something that can work on Windows AND Linux. </p>
