On May 8, 4:27 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> SM wrote:
> > On May 8, 12:31 pm, Piotr <s...@poczta.onet.pl> wrote:
> >> SM wrote:
> >>> On May 8, 11:50 am, SM <servandomont...@gmail.com> wrote:
> >>>> On May 8, 11:42 am, Piotr <s...@poczta.onet.pl> wrote:
> >>>>>>> $thumb = 1;
> >>>>>>> $item = '$thumbs_cat_' . $thumb; //this outputs a string:
> >>>>>>> $thumbs_cat_1
> >>>>>>> $item_total = sizeof($item);
> >>>>>>> output: Nothing!
> >>>>>>> How do i pass a variable to the 'sizeof' function?
> >>>>>> You should use variable variable:
> >>>>>> $item_total = sizeof($$item);
> >>>>>> Mark double $$
> >>>>>> This is true in any situation, not only with sizeof
> >>>>> Forgot about one small detail:
> >>>>> $item = 'thumbs_cat_' . $thumb; //this outputs a string:
> >>>>> ---------^ loose the '$';
> >>>>> best regards
> >>>>> Piotr N
> >>>> I don't need the length of the string , just the actual variable. But
> >>>> i did like the fact that sizeof is an alias of count. So i will use
> >>>> count instead.
> >>>> I didn't know about the $$ tip. Wow! so easy. Thanks, It Works!
> >>>> Heres the final code:
> >>>> $thumb = 1;
> >>>> $item = 'thumbs_cat_' . $thumb;
> >>>> $item_total = count($$item);
> >>>> Thanks again
> >>>> Marco
> >>> Maybe i should open a new post for this one, but here it goes:
> >>> I'm stock! When i want to reference that variable in a echo statment,
> >>> it does't work. Any suggestions?
> >>> Thanks
> >>> <li><a href="<?php echo $SERVER['PHP_SELF']; ?>?cat=<?php echo
> >>> $category_this; ?>"><img src="images/<?php echo($$item[$i]);?>"
> >>> alt="" /></a></li>
> >> :)
> >> It should look like this. Mark the { and }
> >> echo ${$item[$i]};
>
> >> As a side note, is this really best way to access needed data this way ?
> >> Cant you keep original values in the array instead of the variable names ?
>
> >> best regards
> >> Piotr N
>
> > I've tried it, It doesn't work. When i look at the source code, i see
> > an empty string:
> > <img src="images/" alt="" />
>
> > Here's what im trying to do:
> > -From a list, the user selects the category of discography (either
> > original, compilation, tributes, other)
> > -Each type of discography is associated with an array that contains
> > the name of the cd covers.
> > -Then i show a thumbnail (using a loop) of all the cd covers.
>
> > my arrays look like this (one for each category of discography)
> > $thumbs_cat_1 = array('moonlight.jpg'', shadow.jpg', 'luna.jpg');
> > $thumbs_cat_2 = array(...);
> > $thumbs_cat_3 = array(...);
> > $thumbs_cat_4 = array(...);
>
> > Then i create the thumbs like this:
> > for($i=0; ...){
> > ...<img src="images/discography/thumbs/<?php echo $thumbs_cat_1[$i]; ?
> >> " alt="" />
> > }
>
> > All of this works perfectly for the first array.
>
> > That's why, i think, i need a variable that contains the selection
> > from the user (the category of discography) so i can select values
> > from the correct array.
> > I do it like this:
>
> > $cat = $_GET['cat']; //output: 1
> > $sel_array = 'thumbs_cat_' . $cat;//create the string: thumbs_cat_1
>
> > Then i create the thumbs like this:
> > for($i=0; ...){
> > ...<img src="images/discography/thumbs/<?php echo ${$sel_array[$i]}; ?
> >> " alt="" />
> > }
> > ... and so on
>
> > You think my code makes sense? Maybe i'm doing it wrong.
> > The last part is were im stock...
>
> > Any ideas what's wrong?
> > Thanks again
> > Marco
>
> Why go to all that trouble. Just use a two dimensional array, i.e.
>
> $thumb_cats = array();
> $thumb_cats[] = array('moonlight.jpg'', shadow.jpg', 'luna.jpg');
> $thumb_cats[] = array(...);
> $thumb_cats[] = array(...);
> $thumb_cats[] = array(...);
> $thumb_cats[] = array(...);
>
> <img src="images/discography/thumbs/<?php echo $thumb_cats[$sel][$i];?>"
> alt="" />
>
> Much cleaner.
>
> --
> ==================
> Remove the "x" from my email address
> Jerry Stuckle
> JDS Computer Training Corp.
> jstuck...@attglobal.net
> ==================

Hey Jerry! Thanks . That help a lot! Much cleaner and nicer and it
works perfectly! :)

Marco