Question

$query = "SELECT COUNT(t.id), SUM(t.num_replies) FROM threads AS t WHERE t.forum_id=$forum_id";

$result = mysql_query($query);
list($num_threads, $num_posts) = mysql_fetch_assoc($result);

Equals:

Notice: Undefined offset: 1 in C:\wamp\www\includes\functions.php on line 11

Notice: Undefined offset: 0 in C:\wamp\www\includes\functions.php on line 11

Any ideas how i can get rid of these notices?

Answer 1

http://php.net/mysql_fetch_assoc

array mysql_fetch_assoc ( resource $result )

Returns an associative array…

http://php.net/manual/en/function.list.php

array list ( mixed $varname [, mixed $... ] )

Note: list() only works on numerical arrays and assumes the numerical indices start at 0.

You can’t assign to variables via list from an associative array. Either use mysql_fetch_row or, usually better, just use $row = mysql_fetch_assoc($result) and work with $row as an array. You don’t really want to use _fetch_row, since then the sanity of your application hinges on the order the parameters are in in your query, which is something that can break all too easily.