diff --git a/phpBB/admin/admin_user_ban.php b/phpBB/admin/admin_user_ban.php
index 1b18b4af5fd..041a95353d9 100644
--- a/phpBB/admin/admin_user_ban.php
+++ b/phpBB/admin/admin_user_ban.php
@@ -372,7 +372,8 @@
 	$db->sql_freeresult($result);
 
 	$select_userlist = '';
-	for($i = 0; $i < count($user_list); $i++)
+	$x = $user_list ? count($user_list) : 0;
+	for($i = 0; $i < $x; $i++)
 	{
 		$select_userlist .= '<option value="' . $user_list[$i]['ban_id'] . '">' . $user_list[$i]['username'] . '</option>';
 		$userban_count++;
@@ -397,8 +398,8 @@
 
 	$select_iplist = '';
 	$select_emaillist = '';
-
-	for($i = 0; $i < count($banlist); $i++)
+	$x = $banlist ? count($banlist) : 0; 
+	for($i = 0; $i < $x; $i++)
 	{
 		$ban_id = $banlist[$i]['ban_id'];
 
diff --git a/phpBB/admin/admin_words.php b/phpBB/admin/admin_words.php
index b557531fb6a..90d7ec98dd4 100644
--- a/phpBB/admin/admin_words.php
+++ b/phpBB/admin/admin_words.php
@@ -232,7 +232,7 @@
 
 	$word_rows = $db->sql_fetchrowset($result);
 	$db->sql_freeresult($result);
-	$word_count = count($word_rows);
+	$word_count = $word_rows ? count($word_rows) : 0;
 
 	$template->assign_vars(array(
 		"L_WORDS_TITLE" => $lang['Words_title'],
diff --git a/phpBB/admin/index.php b/phpBB/admin/index.php
index 4e3e7367d93..a59d45657de 100644
--- a/phpBB/admin/index.php
+++ b/phpBB/admin/index.php
@@ -476,7 +476,7 @@ function inarray($needle, $haystack)
 	//
 	// Guest users
 	//
-	if( count($onlinerow_guest) )
+	if( $onlinerow_guest ? count($onlinerow_guest) : 0)
 	{
 		$guest_users = 0;
 
diff --git a/phpBB/index.php b/phpBB/index.php
index 4e94041d125..5929a1f5583 100644
--- a/phpBB/index.php
+++ b/phpBB/index.php
@@ -419,8 +419,8 @@
 							{
 								$last_post = $lang['No_Posts'];
 							}
-
-							if ( count($forum_moderators[$forum_id]) > 0 )
+							
+							if ( count($forum_moderators[$forum_id] ?? [] ) > 0 )
 							{
 								$l_moderators = ( count($forum_moderators[$forum_id]) == 1 ) ? $lang['Moderator'] : $lang['Moderators'];
 								$moderator_list = implode(', ', $forum_moderators[$forum_id]);
@@ -470,4 +470,4 @@
 
 include($phpbb_root_path . 'includes/page_tail.'.$phpEx);
 
-?>
\ No newline at end of file
+?>