Fatal error: Call to a member function query_first_slave() on a non-object

[Pc 1203]

Hello All,
I got this:


Fatal error: Call to a member function query_first_slave() on a non-object in /home/penguink/public_html/forums/includes/functions.php on line 1178

in this code:

PHP Code:

<?php
function pk_commentsystem(){
$curdir = getcwd ();
chdir('/home/penguink/public_html/forums');
require_once('/home/penguink/public_html/forums/global.php');
chdir ($curdir);

If ($vbulletin->userinfo['userid']!=0)
    {
    } else {
echo "Please Login, <a href=\"login.php\">here</a>";
exit();
    }
$ip = $_SERVER['REMOTE_ADDR'];
echo "<TABLE BORDER=1 FRAME=BOX RULES=NONE>\n";
echo "<form action=\"process.php\" method=\"post\">\n";
echo "Name: ";
echo $vbulletin->userinfo['username'];
echo "<input type=\"hidden\" name=\"username\" value=\"";
echo $vbulletin->userinfo['username'];
echo "\"/><br />\n";
echo "<input type=\"hidden\" name=\"ip\" value=\"$ip\"><br />\n";
echo "<input type=\"hidden\" name=\"postid\" value=\"$postid\"><br />\n";
echo "Email (Not Shown): <input name=\"email\" value=\"\" type=\"text\" /><br />\n
Title: <input name=\"title\" value=\"\" type=\"text\" /><br />\n
Comment: (Smilies: :) <img src=\"images/smilies/simile.png\"> 8) <img src=\"images/smilies/Cool.png\"> :( <img src=\"images/smilies/sad.png\"><br />\n
<textarea cols=\"40\" id=\"comment\" rows=\"5\" name=\"comment\"></textarea><br />\n
<input type=\"submit\" />\n</form></table>";
}
function pk_comments(){
include('pktutorialz_config.php');

mysql_connect("localhost", "$database_user", "$database_pass") or die(mysql_error());
mysql_select_db("$database_db") or die(mysql_error());

$query = "SELECT * FROM pk_commentz WHERE postid='$postid'"; 
     
$result = mysql_query($query) or die(mysql_error());

while($row = mysql_fetch_array($result)){
    echo $row['title'];
    echo "<br />\n";
    echo $row['comment'];
    echo "\n<hr>";
}
}
?>
<?php
$postid = $_GET['id'];
pk_commentsystem();
echo "<hr>";
pk_comments();
?>

Any help?

- Pc1203