Variable in query string

I have a link (older messages) that links to:

http://www.acpchnqld.org.au/forum/forum.php?next=20

This passes a new value for the variable $next.

Does the dollar sign need to be in the query string to be valid? I thought
the sign was dropped when passing values to variables in this way.

With the above link I am trying to get the forum to show older messages.

The relevant code that checks for a value for $next is below. Note that
this doesn't work currently. Appreciate any suggestions.

David

function treenode($postid, $title, $poster, $posted, $children,
$expand, $depth, $expanded, $sublist)
{
$this->m_postid = $postid;
$this->m_title = $title;
$this->m_poster = $poster;
$this->m_posted = $posted;
$this->m_children =$children;
$this->m_childlist = array();
$this->m_depth = $depth;

if(($sublist||$expand) && $children)
{
$conn = db_connect();
global $next;
if(!$next){
$next=0;
}
global $rpp;
$rpp = 20; //results per page
$query = "select * from header where parent = $postid order by posted
desc limit $next, $rpp";
global $result;
$result = mysql_query($query);

for ($count=0; $row = @mysql_fetch_array($result); $count++)
{
if($sublist||$expanded[ $row['postid'] ] == true)
$expand = true;
else
$expand = false;
$this->m_childlist[$count]= new
treenode($row['postid'],$row['title'],
$row['poster'],$row['posted'],
$row['children'], $expand,
$depth+1, $expanded, $sublist);
}
}
}

On Tue, 19 Aug 2003 22:56:51 +1000, "David & Angela Ehmer"
<ehmer@pacific.net.au> wrote:

>I have a link (older messages) that links to:
>
>http://www.acpchnqld.org.au/forum/forum.php?next=20
>
>This passes a new value for the variable $next.
>
>Does the dollar sign need to be in the query string to be valid? I thought
>the sign was dropped when passing values to variables in this way.
>
>With the above link I am trying to get the forum to show older messages.
>
>The relevant code that checks for a value for $next is below. Note that
>this doesn't work currently. Appreciate any suggestions.

Sounds like you're relying on register_globals = on.

http://www.andyh.uklinux.net/faq/com...rnal-variables

--
Andy Hassall (andy@andyh.co.uk) icq(5747695) (http://www.andyh.co.uk)
Space: disk usage analysis tool (http://www.andyhsoftware.co.uk/space)

"David & Angela Ehmer" <ehmer@pacific.net.au> wrote in message
news:<z8p0b.1269$d6.85347@nasal.pacific.net.au>...
>
> I have a link (older messages) that links to:
>
> http://www.acpchnqld.org.au/forum/forum.php?next=20
>
> This passes a new value for the variable $next.
>
> Does the dollar sign need to be in the query string to be valid?

No. Your query srting is fine.

> The relevant code that checks for a value for $next is below. Note that
> this doesn't work currently. Appreciate any suggestions.

Most likely, you have register_globals set to Off in your php.ini.
This means that PHP will not automatically create a variable $next,
but, rather, will put name-value pairs from the query string into
the $_GET array. So if you want your variable, you have to define
it explicitly:

if (isset ($_GET['next'])) {
$next = $_GET['next'];
} else {
$next = NULL;
}

Cheers,
NC