- date: documentation ( source)
- strtotime: documentation ( source)
<?php
echo date('d/m/Y');
print "\n";
echo date('d/m/Y', strtotime("1-W".date('W')."-".date('Y')));
print "\n";
echo date('d/m/Y', strtotime("2014-W24-1"));
print "\n";
echo date('d/m/Y', strtotime("2014-W24-5"));
?>