session problem

[noobstar]

Good day everyone,

Here is a small code part from my script:

[code]
while ($line = mysql_fetch_assoc($result))
{
echo "<div align=center><form method=post action=threads.php style=display:inline><table width=700 border=0><tr><td>";
echo "<input type=submit value='-=".$line['category']."=-' class=link>";
$_SESSION['forum_id'] = $line['forum_id'];
echo $_SESSION['forum_id'];
echo "<tr><td valign='middle' align=center bgcolor=#86c9e3><span class='style8'>";
echo $line['subject'];
echo "</span></td></tr></table></form></div>";
}
[/code]

What im tring to do is simple. It displays all the categories and next to them is the forum_id now when a user clicks on the perticular category it send the session with the forum_id to a place that displays all the threads. However, the session is flawd it only grabs the last value from the forum_id field in the database so in other words it only displays the threads that are in the 2nd forum.

This is the problem, when it runs this part ...

[code]$_SESSION['forum_id'] = $line['forum_id'];[/code]

... however, it only saves the last value found in forum_id.

My question is, is there a way to send across the correct session value with the corresponing forum_id?

Thank you for any replies or suggestions :)

[.josh]

it only saves the last one because you keep over-writing the same variable. change it to

[code=php:0]
$_SESSION['forum_id'][] = $line['forum_id'];
[/code]

this will make an array of session forum_id to be accessed later on like so:

[code=php:0]
echo $_SESSION['forum_id'][0]; // echo 1st one
echo $_SESSION['forum_id'][1]; // echo 2nd one
echo $_SESSION['forum_id'][2]; // echo 3rd one
// you get the picture
[/code]

[noobstar]

Yea i knew it would have to do something with arrays, im still fairly new to php afterall.

I tried what you said however, this is what i got ...

Fatal error: [] operator not supported for strings in C:\wamp\www\forum\forum.php on line 23

I also tried echoing out but the same error came up :S

[noobstar]

Sorry, i got it to work but its not the thing i was after

It does the job in a way however i would have to specify the forum_id manually i need something that puts in automatically something like this code would do:

[code] while ($line = mysql_fetch_assoc($result))
{
echo "<div align=center><form method=post action=threads.php style=display:inline><table width=700 border=0><tr><td valign=middle align=center bgcolor=#58a7c6>";
echo "<input type=submit value='-=".$line['category']."=-' class=link>";
echo "<input type=hidden name=forum_id value=".$line['forum_id'].">";
echo "<tr><td valign='middle' align=center bgcolor=#86c9e3><span class='style8'>";
echo $line['subject'];
echo "</span></td></tr></table></form></div>";
}[/code]

This brings in the forum_id ($line['forum_id']) and when i click on my forum category that is sent to threads and then it is used in a query that displays all the related threads to the forum_id.

I hope you can understand me :(

[alpine]

Try to set $_SESSION['forum_id'] as an array first, and CV's way is fine:

[code]
<?php

$_SESSION['forum_id'] = array();

// then run the while()

?>
[/code]

[noobstar]

The output is exactly the same as from my first reply by which it only passes the last value of forum_id

O well never mind i guess i can stick my other way this would have saved quite a bit of coding though but what can i do

thanks again though from both of you i do appreciate the help, its just im still a bit green on php and i haven't tried alot out :)