From 6600fc6cad5f6d43acdcc9a303be4ce91ed48f2e Mon Sep 17 00:00:00 2001
From: 3D-I <480857+3D-I@users.noreply.github.com>
Date: Sun, 8 Sep 2019 03:29:27 +0200
Subject: [PATCH] [ticket/16151] Enable Emojis and rich text in forum name

PHPBB3-16151
---
 phpBB/includes/acp/acp_forums.php | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/phpBB/includes/acp/acp_forums.php b/phpBB/includes/acp/acp_forums.php
index cb0593b14a..0bbaf96dec 100644
--- a/phpBB/includes/acp/acp_forums.php
+++ b/phpBB/includes/acp/acp_forums.php
@@ -986,10 +986,30 @@ class acp_forums
 			$errors[] = $user->lang['FORUM_NAME_EMPTY'];
 		}
 
-		// No Emojis
+		/**
+		 * Replace Emojis and other 4bit UTF-8 chars not allowed by MySql to NCR.
+		 * Using their Numeric Character Reference's Hexadecimal notation.
+		 * Doesn't interfere with Japanese or Cyrillic etc.
+		 *
+		 * @see https://www.w3.org/TR/xml11/
+		 * @see https://www.opentag.com/xfaq_charrep.htm
+		 */
+		if (preg_match_all('/[\x{10000}-\x{10FFFF}]/u', $forum_data_ary['forum_name'], $matches))
+		{
+			foreach ($matches as $key => $emoji)
+			{
+				$forum_data_ary['forum_name'] = str_replace($emoji, utf8_encode_ncr($emoji), $forum_data_ary['forum_name']);
+			}
+		}
+
+		/**
+		 * This should never happen again.
+		 * Leaving the fallback hre just in case there will be the need of it.
+		 */
 		if (preg_match_all('/[\x{10000}-\x{10FFFF}]/u', $forum_data_ary['forum_name'], $matches))
 		{
 			$character_list = implode('<br>', $matches[0]);
+
 			$errors[] = $user->lang('FORUM_NAME_EMOJI', $character_list);
 		}