I use strftime("%y" , $var) to get the day of the week to display in a website. http://nieuws.online.o2.nl (dutch site, designed for a pda)

However since 23-6-2002 (D/M/Y) it displays the day of the week as being one higher then it really is. 23 was a sunday. wich should make 24 monday. However it returns 2 both in %u and %w wich make it tuesday. I tried it on three different servers. one of them running 4.0.4pl1 and they all have the same problem.
http://julia.o2.nl/problem.php (4.0.4)
http://romeo.online.o2.nl/problem.php (4.1.2)

Following is the code. I think I did everything right, according to the "it worked before" principle.


0 = zondag<br>
1 = maandag<br>
2 = dinsdag<br>
3 = woensdag<br>
4 = donderdag<br>
5 = vrijdag<br>
6 = zaterdag<br>
7 = zondag<br>
<?php
print(strftime("%u" , time()) . "<br>\n");
if(!ereg("([0-9]*)-([0-9]*)-([0-9]*) ([0-9]*):([0-9]*):([0-9]*)" , "2002-06-25 11:09:12" , $b))
  Exit_Error("Invalid date format found");
                                // int mktime ( int hour, int minute, int second, int month, int day, int year [, int is_dst])
$timestamp = mktime($b[3] , $b[5] , $b[6] , $b[2] , $b[3] , $b[1]);
print("dag    " . $b[3] . "<br>\n");
print("maand  " . $b[2] . "<br>\n");
print("jaar   " . $b[1] . "<br>\n");
print("uur    " . $b[4] . "<br>\n");
print("min    " . $b[5] . "<br>\n");
print("sec    " . $b[6] . "<br>\n");
print($timestamp . "<br>\n");
print(strftime("DAG 1 = maandag [%u] DAG 0 = zondag [%w]" , $timestamp) . "<br>\n");
print("------------------------<br>\n");
if(!ereg("([0-9]*)-([0-9]*)-([0-9]*) ([0-9]*):([0-9]*):([0-9]*)" , "2002-06-23 11:09:12" , $b))
  Exit_Error("Invalid date format found");
                                // int mktime ( int hour, int minute, int second, int month, int day, int year [, int is_dst])
$timestamp = mktime($b[3] , $b[5] , $b[6] , $b[2] , $b[3] , $b[1]);
print("dag    " . $b[3] . "<br>\n");
print("maand  " . $b[2] . "<br>\n");
print("jaar   " . $b[1] . "<br>\n");
print("uur    " . $b[4] . "<br>\n");
print("min    " . $b[5] . "<br>\n");
print("sec    " . $b[6] . "<br>\n");
print($timestamp . "<br>\n");
print(strftime("DAG 1 = maandag [%u] DAG 0 = zondag [%w]" , $timestamp) . "<br>\n");
  print("------------------------<br>\n");
if(!ereg("([0-9]*)-([0-9]*)-([0-9]*) ([0-9]*):([0-9]*):([0-9]*)" , "2002-06-24 11:09:12" , $b))
  Exit_Error("Invalid date format found");
                                // int mktime ( int hour, int minute, int second, int month, int day, int year [, int is_dst])
$timestamp = mktime($b[3] , $b[5] , $b[6] , $b[2] , $b[3] , $b[1]);
print("dag    " . $b[3] . "<br>\n");
print("maand  " . $b[2] . "<br>\n");
print("jaar   " . $b[1] . "<br>\n");
print("uur    " . $b[4] . "<br>\n");
print("min    " . $b[5] . "<br>\n");
print("sec    " . $b[6] . "<br>\n");
print($timestamp . "<br>\n");
print(strftime("DAG 1 = maandag [%u] DAG 0 = zondag [%w]" , $timestamp) . "<br>\n");
?>
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