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"PHP Help"

Is there a way to set a range for url variables?

eg

index.php?img=0

I want img to go from 0 - 10. Any way to do this?

Ok, thanks alot for the help guys.

EDIT: Works a treat.

Now to add a file count that will determine the maximum number of images. Don't tell me though, I'm learning :P

Damarus wrote:
> Nimco wrote:
> Or use an if statement to display the previous and next buttons in
> the
> first place - like I do on my galleries.
>
> I was going to do something like this however my script already uses
> php in the link.
>
> > border="0">
>
>
> Would it be possible to do php including php. IE.
>
> >
> if(etc)
>
> echo (' above code ');
>
> ?>

Yup, nothing wrong with that at all - that's what PHP is for!

Nimco wrote:
> Or use an if statement to display the previous and next buttons in the
> first place - like I do on my galleries.

I was going to do something like this however my script already uses php in the link.




Would it be possible to do php including php. IE.


if(etc)

echo (' above code ');

?>

Or use an if statement to display the previous and next buttons in the first place - like I do on my galleries.

Damarus wrote:
> At the minute I have an image with previous and next commands.
>
> This all works very well, however the problem I'm having is that
> images -1 and 5 don't exist.
>
> Pressing next will add 1 to "img" and pressing previous
> will deduct 1 from "img".
>
> Obviously, I don't want it to display pics that don't exist.

So on variable pickup do a check?

if ($var < 0) $var = 0;
if ($var > 10) $var = 10;

Dunno what you mean by image 5.

Ahhhh. Get you. I think it'll be impossible to do via html variable passing only, you've have to do a SQL statement and get the next / previous image that exists from your database. You could try to load the image and if there's no data, add on to / subtract from the variable and reload that page, but that's an ugly, ugly solution.

At the minute I have an image with previous and next commands.

This all works very well, however the problem I'm having is that images -1 and 5 don't exist.

Pressing next will add 1 to "img" and pressing previous will deduct 1 from "img".

Obviously, I don't want it to display pics that don't exist.

You want to limit the variable to between 0 and 10?

if($img >= 0 && $img <= 10)
{ echo "True"; }
else
{ echo "False"; }

Nimco wrote:
> so if you went to: index.php?img=3-8
>
> it would display a page with:
>
> low = 3
> high = 7
> ----------------
>
> Are either of those what you are looking for?

low = 3
high = 8
----------------

Don't try to say my code is bugged. ;)

I'm still not following exactly what you're trying to do. My script will just write:

index.php?img=0
index.php?img=1
index.php?img=2
index.php?img=3
index.php?img=4
index.php?img=5
index.php?img=6
index.php?img=7
index.php?img=8
index.php?img=9
index.php?img=10

whereas with Pandaemonium's script will turn a query string variable into the two limits of a range, so if you went to: index.php?img=3-8

it would display a page with:

low = 3
high = 7
----------------

Are either of those what you are looking for?

Appallingly quick and dirty, and there's probably a far better way to do it, but I think this is what you're looking for.

[edit] If anyones got an easier way to do this, I'd be interested. Nuts to passing arrays mind.

test.php

-=-=-=-=-=-=-=-=-=-

if (isset($HTTP_GET_VARS['img'])) {
$range = ($HTTP_GET_VARS['img']);
$split = strpos($range,"-");
$low = substr($range,0,$split);
$high = substr($range,$split+1,strlen($range));
echo "low = ".$low;
echo "
high = ".$high;
echo "
-------------------
";
}
?>








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