Hello,

Basically I am creating a Forum system and I want to add a feature in which the the 'admin' of the forum can delete the topic created inside the forum.

I know I would need the following sql statement:

$sql = "DELETE FROM `forum_topics` WHERE `id`='".$id."';

Currently I have a mod.php file to edit topics which can only be done either by the author or admin and I call this from my topic.php page posted below.
mod.php

<?php

error_reporting(E_ALL ^ E_NOTICE); //Report all error except NOTICES

if(!$_SESSION['uid']){
header("Location: index.php");
}

$actz = $_GET['act2'];
$actzz = array('reply','topic','admin');

if($actz){
	$admin = isa($_SESSION['uid']);
	
	if($actz == 'admin'){
	    if($admin){
		}else {
		   echo "You are not an administrator, so you cannot view this page!";
		   }
        }
	
	if($actz == 'reply'){
		$id = mss($_GET['id']);
		if($id){
			$sql = "SELECT * FROM `forum_replies` WHERE `id`='".$id."'";
			$res = mysql_query($sql) or die(mysql_error());
			if(mysql_num_rows($res) == 0){
				echo "This topic doesn't exist, so therefore you cannot edit it!";
				}else {
					$row = mysql_fetch_assoc($res);
					$user_id = $row['uid'];

					if($user_id == $_SESSION['uid'] || $admin == 1){
					  if(!$_POST['submit']){
							echo "<form method=\"post\" action=\"./index.php?act=mod&act2=reply&id=".$id."\">\n";
							echo "<table border=\"0\" width=\"100%\" cellspacing=\"3\" cellpadding=\"3\">\n";
							echo "<tr><td class=\"forum_header\" align=\"center\"><textarea style=\"width:90%;height:200px\" name=\"reply\">".$row['message']."</textarea></td></tr>\n";
							echo "<tr><td class=\"forum_header\" align=\"center\"><input type=\"submit\" name=\"submit\" value=\"Edit This Reply\"></td></tr>\n";
							echo "</table></form>\n";
							}else {
								$reply = mss($_POST['reply']);
									if($reply){
										$r = range(10,10000);
										if(in_array(strlen($reply),$r)){
											$sql2 = "UPDATE `forum_replies` SET `message`='".$reply."', `edit_time`='".time()."' WHERE `id`='".$id."'";
											$res2 = mysql_query($sql2) or die(mysql_error());
											header("Location: index.php?act=topic&id=".$row['tid']."");
											}else {
												echo "Your message must be between 10 and 10000";
											}
										}
									}
								}else {
									echo "This is not your reply to edit!";
									}
						}
					}
			}
		
		
	if($actz == 'topic'){
		
		
		}
	 }else {
	header("Location: index.php");
}
?>

topic.php

<?php

error_reporting(E_ALL ^ E_NOTICE); //Report all error except NOTICES
$id = mss($_GET['id']);
$page = (!$_GET['page'] || $_GET['page'] < 0) ? "1" : $_GET['page'];
$page = ceil($page);

$limit = 10;
$start = $limit;
$end = $page*$limit-($limit);

if($id){
	$sql = "SELECT * FROM `forum_topics` WHERE `id`='".$id."'";
	$res = mysql_query($sql) or die(mysql_error());
	if(mysql_num_rows($res) == 0){
		echo "This topic does not exists!";
		}else {
			$row = mysql_fetch_assoc($res);
			$sql2 = "SELECT admin FROM `forum_sub_cats` WHERE `id`='".$row['cid']."'";
			$res2 = mysql_query($sql2) or die(mysql_error());
			$row2 = mysql_fetch_assoc($res2);
			if($row2['admin'] == 1 && $admin_user_level == 0){
				echo "You cannot view this topic!";
				}else {
					$a = (isa($row['uid'])) ? "<font style=\"color:#800000;\">ADMIN</font>" : "";
					echo "<table border=\"0\" width=\"100%\"cellspacing=\"3\" cellpadding=\"3\">\n";
					echo "<tr><td colspan=\"2\" align=\"left\" class=\"forum_header\"><b>".$row['title']."</b>- Posted on: <em>".$row['date']."</em></td></tr>\n";
					echo "<tr><td align=\"left\" width=\"15%\" valign=\"top\" class=\"forum_header\">".uid($row['uid'],true)."<br>Post Count: ".post($row['uid'])."</br>".$a."</td>\n";
					echo "<td align=\"left\" valign=\"top\" class=\"forum_header\">\n";
					echo topic($row['message']);
					echo "</td>\n";
					echo "</tr>\n";
					$amount_check = "SELECT * FROM `forum_replies` WHERE `tid`='".$id."'";
					$amount_check_res = mysql_query($amount_check) or die(mysql_error());
					$amount_count = mysql_num_rows($amount_check_res);
					$pages = ceil($amount_count/$limit);
					
					$previous = ($page-1 <= 0) ? "&laquo; Prev" : "<a href=\"./index.php?act=topic&id=".$id."&page=".($page-1)."\">&laquo; Prev</a>";
					$nextpage = ($page+1 > $pages) ? "Next &raquo;" : "<a href=\"./index.php?act=topic&id=".$id."&page=".($page+1)."\">Next &raquo;</a>";
					echo "<tr><td align=\"right\" colspan=\"2\" class=\"forum_header\">\n";
					echo "Pages: ";
					echo $previous;
					for($i=1;$i<=$pages;$i++){
						$href = ($page == $i) ? " ".$i." " : " <a href=\"./index.php?act=topic&id=".$id."&page=".$i."\">".$i."</a> ";
						
						echo $href;
					}
					echo $nextpage;
					echo "</td></tr>\n";
					$select_sql = "SELECT * FROM `forum_replies` WHERE `tid`='".$id."' ORDER BY id ASC LIMIT ".$end.",".$start."";
					$select_res = mysql_query($select_sql) or die(mysql_error());
					
					while($rowr = mysql_fetch_assoc($select_res)){
					echo "<tr><td colspan=\"2\" align=\"left\" class=\"forum_header\">Posted on: <em>".$rowr['date']."</em></td></tr>\n";
					echo "<tr><td align=\"left\" width=\"15%\" valign=\"top\" class=\"forum_header\">".uid($rowr['uid'],true)."<br>Post Count: ".post($rowr['uid'])."</br>".$a."</td>\n";
					echo "<td align=\"left\" valign=\"top\" class=\"forum_header\">\n";
					echo topic($rowr['message']);
					if($rowr['edit_time'] > 0){
						echo "<tr><td align=\"left\" colspan=\"3\" class=\"forum_header\"><em>Edited at:".date("l jS \of F Y",$rowr['edit_time']) . " at " . date("h:i:s",$rowr['edit_time'])."</em></td></tr>\n";
						}
					$adminz = isa($_SESSION['uid']);
					if($adminz == 1 || $rowr['uid'] == $_SESSION['uid']){
						echo "<tr><td align=\"left\" colspan=\"2\"><a href=\"index.php?act=mod&act2=reply&id=".$rowr['id']."\">Edit This Reply</a></td><tr>\n";
					}
					echo "</td>\n";
					echo "</tr>\n";
					}		

					echo "<form method=\"post\" action=\"./index.php?act=reply&id=".$row['id']."\">\n";
				    echo "<tr><td colspan=\"2\" align=\"center\"><textarea style=\"width:90%\" name=\"reply\"></textarea><br><input type=\"submit\" name=\"submit\" value=\"Add Reply\" stlye=\"width:90%\"></td</tr>\n";
					echo "</table>\n";
					  }  
						}
							}else {
									echo "Please view a valid topic!";
								  }
?>

I was wondering if anybody could guide me as how I could perform this task.

I only want the the admin to be able to delete the post.

If you wrote mod.php then you can write the script for deleting a thread by admin.

I see you are checking if a user is an admin by:

if($admin){...

If you wrote mod.php then you can write the script for deleting a thread by admin.

I see you are checking if a user is an admin by:

if($admin){...

Thanks for replying 'kadimi' the problem is now resolved.

Yes I used the above PHP code and then used my delete statement.

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