selecting certain parts of an id

[almightyegg]

I have message board post IDs like 34.148 or gdis.9834 the bit before the full stop is the forum ID and the bit after is the post ID. What I need to do is select the forum ID and the post ID separately (without the full stop) how would I do this?

[trq]

<?php

  $s = "gdis.9834";
  $arr = explode('.',$s);
  echo "forum id = " . $arr[0];
  echo "post id = " . $arr[1];

?>

[almightyegg]

<form action="viewthread.php?f=<? echo "$fid"; ?>&t=<? echo "$tid"; ?>" method="GET">
<b>Input a Thread ID and jump straight to it:</b><br>
Thread ID <input type="text" name="t">
<input type="submit" value="Jump to Thread">
<?
$pos = $_GET['t'];
$arr = explode('.',$pos);
$fid = $arr[0];
$tid = $arr[1];

?>
</form>

 

It doesn't seem to work in this....

[trq]

It doesn't seem to work in this....

 

What exactly do you expect that code to do?

[almightyegg]

To jump straight to the thread that the user requests. It gets the forum, and the thread then it should put them into a link like so viewthread.php?f=forumID&t=threadID but instead it does viewthread.php?t=threadID.forumID

[AndyB]

Then your code is incomplete and structured wrongly, isn't it.

[almightyegg]

But I don't understand what's wrong with it

<form action="viewthread.php?<? echo "f=$fid&t=$tid"; ?>" method="GET">

 

That's the line that makes the link and it is there....the only thing I can think of is it is remembering what used to be there. It used to be:

<form action="viewthread.php?<? echo "&t=$pos"; ?>" method="GET">

but then I changed the setup of all my IDs in the tables today

[chigley]

Look at it, you define the variables after you try to echo them...

[almightyegg]

I always defined $pos after echoing them and it worked, because it needs to complete the form before looking at the link

[almightyegg]

Does anybody know how to do this?? Not necessarily using my script but basically I need an imput box where you enter ForumID.ThreadID and it turns it into a link like viewthread.php?f=ForumID&t=ThreadID