- date: documentation ( source)
<?php
echo date("w","2011-11-11")."<br />";
echo date("w","2011-11-12")."<br />";
echo date("w","2011-11-13")."<br />";
echo date("w","2011-11-14")."<br />";
echo date("w","2011-11-15")."<br />";
echo date("w","2011-11-16")."<br />";
echo date("w","2011-11-17")."<br />";