PHP: How to get Sunday and Saturday given a date input?

Question

How can I get the Sunday and Saturday of the week given a specific date?

For example:

input: Monday, September 28, 2009

output should be:

Answer 1

setISODate(2009, $datetime->format("W"), 6);
print "Saturday:" . $datetime->format(DATE_ATOM) . "\n";
// Sunday
$datetime->setISODate(2009, $datetime->format("W"), 0);
print "Sunday: " . $datetime->format(DATE_ATOM) . "\n";


?>