RE: RE: array_unique & multi-dimensional arrays

Sasha ... I'm sending this again to the list as it seemed to bounce from your address the way I was doing it prevents unique values from being created in the first place. The only array that gets overwritten is one that would be the same any way while ($row = mysql_fetch_array($result)) { $month = date("m", $row['timestamp']); $year = date("Y", $row['timestamp']); $archive_date = mktime(1,1,1,$month,1,$year); $archive_nav[$archive_date] = $archive_date; } ... ensures that if the date has already been added to the array then it overwrites the existing one instead of adding a new element. Tim Ward > -----Original Message----- > From: sasha [mailto:spam@bittersweet2.com] > Sent: 20 August 2002 14:36 > To: Tim Ward > Subject: Re: RE: array_unique & multi-dimensional arrays > > > It may just have been that I was not putting your > sample code in the right location... I had ended up > doing it differently than I originally intended: > > while ($row = mysql_fetch_array($result)) { > $month = date("m", $row['timestamp']); > $year = date("Y", $row['timestamp']); > $archive_date = mktime(1,1,1,$month,1,$year); > > array_push($archive_nav, $archive_date); > } > $archive_nav = array_values(array_unique > ($archive_nav)); > > And then later on, I do a date check on the new > timestamp to get the month/year/longmonth out of it. > Only 3 extra lines of code this way. > > I don't understand exactly how your code works. If I > do it inside of the while loop, it would overwrite the > previous contents of the array (unless I did a '.=', > instead of just '='). So when I tried doing it > outside of the loop, all I ended up with was nothing. > > thanks > sasha > > 8/20/2002 3:58:01 AM, Tim Ward > <Tim.ward@stivesdirect.com> wrote: > > >array_unique tests the values of each element of the > top level array - which > >are all 'array' - hence you only get one element left > > > >the way I'd do this is ... > >$archive_nav["$year/$month"] = array(month => $month, > year => $year, > >longmonth => $longmonth); > > > >this will prevent duplicate combinations of month and > year (and, > >incidentally, allow you to sort on year and month > very easily). > > > >Tim Ward > >www.chessish.com > > > >> -----Original Message----- > >> From: sasha [mailto:spam@bittersweet2.com] > >> Sent: 19 August 2002 19:10 > >> To: php-general@lists.php.net > >> Subject: array_unique & multi-dimensional arrays > >> > >> > >> I am trying to clean up some junky code in a > journal/news type > >> script and redoing the archive navigation. I am > pulling all of > >> the dates of the entries and pushing it into a > multi- > >> dimensional array like so: > >> > >> array_push($archive_nav, array(month => $month, > year => $year, > >> longmonth => $longmonth)); > >> > >> I assumed I could just use array_unique to filter > out all of > >> the duplicates in the array. But it doesn't seem > to work that > >> way, and the only month/year combo I end up with is > the very > >> oldest one (according to year/month) in the array. > >> > >> $archive_nav = array_unique($archive_nav); > >> > >> If I leave out array_unique, I am getting all of > the > >> appropriate month/year combos in my script while > doing a > >> foreach... just one for every single entry in the > database for > >> that combo (which is a lot in some cases!). > >> > >> Is there a better way to do this? > >> > >> sasha > >> > >> > >> > > > > >