Dag bij datum

http://nl.php.net/manual/en/function.date.php
<?php
// Prints something like: Monday
echo date("l");
?>

en combineer met dit:
http://nl.php.net/manual/en/function.setlocale.php
<?php
/* Set locale to Dutch */
setlocale(LC_ALL, 'nl_NL');

/* Output: vrijdag 22 december 1978 */
echo strftime("%A %e %B %Y", mktime(0, 0, 0, 12, 22, 1978));
?>

suc6 ;)

<?php
setlocale(LC_ALL, 'nl_NL');
echo date("l");
?>

<?php
echo welkeDag("2009-01-10"); //Geeft Donderdag ( vandaag)
?>


<?php
function welkeDag($datum) {
$exp = explode("-", $datum);
$maketime = mktime(0, 0, 0, $exp[1], $exp[2], $exp[0]);
$date = getdate($maketime);

return $date['weekday'];
}