Adrian Bruce wrote: > Hi > > I am having an unusual problem when trying to calculate dates in advance > from a start date. the code below shows a loop where by on each run an > increasing number of weeks is added to the start date, this works as > expected up untill the 8th time where for some reason it produces > 01-11-05 instead of 02-11-05. I am at a loss as to why this would > happen when it works perfectly for all the other dates. where am i > going wrong? > > [snip] > > <?php > echo"<h1> date test</h1>"; > $start = "05-09-07"; > $start = explode('-',$start); > $startmk = mktime(0,0,0,$start[1],$start[2],$start[0]); > $startdate = date('d-m-y',$startmk); > > for($i=0;$i<10;$i++){ > $nextdate = date('d-m-y',$startmk + ($i*604800)); > echo"<h1>$i: $startdate -- -- --$nextdate</h1>"; > } > ?> > > OUTPUT: > > 0: 07-09-05 -- -- --07-09-05 > 1: 07-09-05 -- -- --14-09-05 > 2: 07-09-05 -- -- --21-09-05 > 3: 07-09-05 -- -- --28-09-05 > 4: 07-09-05 -- -- --05-10-05 > 5: 07-09-05 -- -- --12-10-05 > 6: 07-09-05 -- -- --19-10-05 > 7: 07-09-05 -- -- --26-10-05 > 8: 07-09-05 -- -- --01-11-05 > 9: 07-09-05 -- -- --08-11-05 > > [/snip] > > Thanks a lot > > Ade Does daylight saving start or finish in that range of dates? If so, using 0 as the hour argument to mktime may give you the odd result you are seeing. Try say 2 as the hour argument and see what happens . Cheers -- David Robley The guy who writes all those bumper stickers HATES New York. Today is Prickle-Prickle, the 16th day of Discord in the YOLD 3172. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php