daylight saving time?!

use mktime(12,0,0,...) if you are interested in the date only

No, just trying to get a consistently working numeric date for the Sunday of that week.  yymmdd

Though a previos algorithm I had:
echo "last sunday: ".date("ymd", mktime(0,0,0,$mnth,$dy-date("w",mktime(0,0,0,$mnth,$dy,$yr)),$yr))."<br

is working this week properly, but has in the past worked inproperly.. there is something really goofy going on with the date math in php.

Anyone have a ultra reliable Sunday of the Week algorithm?

Guess it worked last week only due to the daylight saving switch which compensated an off-by-one error in your code.

*Every* piece of code that uses mktime(0,0,0,...) and
addition or subtraction of multiples of 86400 has to
check for daylight saving time switches or use the optional 7th parameter to mktime() to be correct

this database is full of user bugs related to this issue

$today_var = getdate();
                        $today_sec = mktime(0,0,0,date("m"),date("d"),date("Y"),1);
                        $offset = ($today_var['wday']-0) * 86400 ;
                        $first_day = $today_sec - $offset;
                        $this_week_first_date = date("ymd", $first_day);
                        $path=$this_week_first_date;


Still gives the wrong result.. Doesn't anybody have a reliable piece of code to Get the Sunday of the current week, this week it should be the 7th not the 6th!

Now this week however this code works:
date("ymd", mktime(0,0,0,$mnth,$dy-date("w",mktime(0,0,0,$mnth,$dy,$yr)),$yr))

What gives? A real piece of code that works reliably still needed for me and for sure everybody.

The bug system is not the appropriate forum for asking support
questions. For a list of a range of more appropriate places to ask
for help using PHP, please visit http://www.php.net/support.php

OK - my apologies, I have wrapped up into one posting both a bug and a support issue. I will post on the support area, but, I do believe this is a bug.

ya ya, lets keep it closed now.

Question one: 
When does Daylight Saving Time switch happen 
in your country aka. in whatever is configured
on your system?

Question two:
have you at least *tried* mktime(12,0,0,...
to have your calculations noon-based instead 
of midnight based?