1 files changed, 78 insertions, 0 deletions
diff --git a/phpBB/includes/functions_admin.php b/phpBB/includes/functions_admin.php
index 067f463325..0507d68c40 100644
--- a/phpBB/includes/functions_admin.php
+++ b/phpBB/includes/functions_admin.php
@@ -2149,6 +2149,84 @@ if (class_exists('auth'))
 	}
 }
 
+// Update Post Informations (First/Last Post in topic/forum)
+// Should be used instead of sync() if only the last post informations are out of sync... faster
+function update_post_information($type, $ids)
+{
+	global $db;
+
+	if (!is_array($ids))
+	{
+		$ids = array($ids);
+	}
+
+	$update_sql = $empty_forums = array();
 
+	$sql = 'SELECT ' . $type . '_id, MAX(post_id) as last_post_id
+		FROM ' . POSTS_TABLE . "
+		WHERE post_approved = 1
+			AND {$type}_id IN (" . implode(', ', $ids) . ")
+		GROUP BY {$type}_id";
+	$result = $db->sql_query($sql);
+
+	$last_post_ids = array();
+	while ($row = $db->sql_fetchrow($result))
+	{
+		if ($type == 'forum')
+		{
+			$empty_forums[] = $row['forum_id'];
+		}
+
+		$last_post_ids[] = $row['last_post_id'];
+	}
+	$db->sql_freeresult($result);
+
+	if ($type == 'forum')
+	{
+		$empty_forums = array_diff($ids, $empty_forums);
+
+		foreach ($empty_forums as $void => $forum_id)
+		{
+			$update_sql[$forum_id][] = 'forum_last_post_id = 0';
+			$update_sql[$forum_id][] =	'forum_last_post_time = 0';
+			$update_sql[$forum_id][] = 'forum_last_poster_id = 0';
+			$update_sql[$forum_id][] = "forum_last_poster_name = ''";
+		}
+	}
+
+	if (sizeof($last_post_ids))
+	{
+		$sql = 'SELECT p.' . $type . '_id, p.post_id, p.post_time, p.poster_id, p.post_username, u.user_id, u.username
+			FROM ' . POSTS_TABLE . ' p, ' . USERS_TABLE . ' u
+			WHERE p.poster_id = u.user_id
+				AND p.post_id IN (' . implode(', ', $last_post_ids) . ')';
+		$result = $db->sql_query($sql);
+
+		while ($row = $db->sql_fetchrow($result))
+		{
+			$update_sql[$row["{$type}_id"]][] = $type . '_last_post_id = ' . (int) $row['post_id'];
+			$update_sql[$row["{$type}_id"]][] = $type . '_last_post_time = ' . (int) $row['post_time'];
+			$update_sql[$row["{$type}_id"]][] = $type . '_last_poster_id = ' . (int) $row['poster_id'];
+			$update_sql[$row["{$type}_id"]][] = "{$type}_last_poster_name = '" . (($row['poster_id'] == ANONYMOUS) ? $db->sql_escape($row['post_username']) : $db->sql_escape($row['username'])) . "'";
+		}
+		$db->sql_freeresult($result);
+	}
+	unset($empty_forums, $ids, $last_post_ids);
+
+	if (!sizeof($update_sql))
+	{
+		return;
+	}
+
+	$table = ($type == 'forum') ? FORUMS_TABLE : TOPICS_TABLE;
+
+	foreach ($update_sql as $update_id => $update_sql_ary)
+	{
+		$sql = "UPDATE $table
+			SET " . implode(', ', $update_sql_ary) . "
+			WHERE {$type}_id = $update_id";
+		$db->sql_query($sql);
+	}
+}
 
 ?>
 \ No newline at end of file