Code Changes

			'EMAIL_SIG'	=> str_replace('<br />', "\n", "-- \n" . htmlspecialchars_decode($config['board_email_sig'])),
			'SITENAME'	=> htmlspecialchars_decode($config['sitename']),

			'EMAIL_SIG'	=> str_replace('<br />', "\n", "-- \n" . html_entity_decode($config['board_email_sig'], ENT_COMPAT)),
			'SITENAME'	=> html_entity_decode($config['sitename'], ENT_COMPAT),

		$calling_page = htmlspecialchars_decode($request->server('PHP_SELF'));

		$calling_page = html_entity_decode($request->server('REQUEST_URI'), ENT_COMPAT);

		$message .= '<br /><em>' . htmlspecialchars($calling_page) . '</em><br /><br />' . $msg . '<br />';

		$message .= '<br /><em>' . htmlspecialchars($calling_page, ENT_COMPAT) . '</em><br /><br />' . $msg . '<br />';

		$contact_name = htmlspecialchars_decode($config['board_contact_name']);

		$contact_name = html_entity_decode($config['board_contact_name'], ENT_COMPAT);

		$encode_eol = ($config['smtp_delivery']) ? "\r\n" : PHP_EOL;

		$encode_eol = $config['smtp_delivery'] || PHP_VERSION_ID >= 80000 ? "\r\n" : PHP_EOL;

				$result = phpbb_mail($mail_to, $this->subject, $this->msg, $headers, PHP_EOL, $err_msg);

				$result = phpbb_mail($mail_to, $this->subject, $this->msg, $headers, $encode_eol, $err_msg);

			$this->jabber = new jabber($config['jab_host'], $config['jab_port'], $config['jab_username'], htmlspecialchars_decode($config['jab_password']), $config['jab_use_ssl'], $config['jab_verify_peer'], $config['jab_verify_peer_name'], $config['jab_allow_self_signed']);

			$this->jabber = new jabber($config['jab_host'], $config['jab_port'], $config['jab_username'], html_entity_decode($config['jab_password'], ENT_COMPAT), $config['jab_use_ssl'], $config['jab_verify_peer'], $config['jab_verify_peer_name'], $config['jab_allow_self_signed']);

					$this->jabber = new jabber($config['jab_host'], $config['jab_port'], $config['jab_username'], htmlspecialchars_decode($config['jab_password']), $config['jab_use_ssl'], $config['jab_verify_peer'], $config['jab_verify_peer_name'], $config['jab_allow_self_signed']);

					$this->jabber = new jabber($config['jab_host'], $config['jab_port'], $config['jab_username'], html_entity_decode($config['jab_password'], ENT_COMPAT), $config['jab_use_ssl'], $config['jab_verify_peer'], $config['jab_verify_peer_name'], $config['jab_allow_self_signed']);

								$result = phpbb_mail($to, $subject, $msg, $headers, PHP_EOL, $err_msg);

								$encode_eol = $config['smtp_delivery'] || PHP_VERSION_ID >= 80000 ? "\r\n" : PHP_EOL;
								$result = phpbb_mail($to, $subject, $msg, $headers, $encode_eol, $err_msg);

		$err_msg .= ($error_contents) ? '<br /><br />' . htmlspecialchars($error_contents) : '';

		$err_msg .= ($error_contents) ? '<br /><br />' . htmlspecialchars($error_contents, ENT_COMPAT) : '';

	if ($err_msg = $smtp->log_into_server($config['smtp_host'], $config['smtp_username'], htmlspecialchars_decode($config['smtp_password']), $config['smtp_auth_method']))

	if ($err_msg = $smtp->log_into_server($config['smtp_host'], $config['smtp_username'], html_entity_decode($config['smtp_password'], ENT_COMPAT), $config['smtp_auth_method']))

		$err_msg .= (isset($user->lang['INVALID_EMAIL_LOG'])) ? sprintf($user->lang['INVALID_EMAIL_LOG'], htmlspecialchars($mail_to_address)) : '<strong>' . htmlspecialchars($mail_to_address) . '</strong> possibly an invalid email address?';

		$err_msg .= (isset($user->lang['INVALID_EMAIL_LOG'])) ? sprintf($user->lang['INVALID_EMAIL_LOG'], htmlspecialchars($mail_to_address, ENT_COMPAT)) : '<strong>' . htmlspecialchars($mail_to_address, ENT_COMPAT) . '</strong> possibly an invalid email address?';

			$this->backtrace_log[] = utf8_htmlspecialchars($message);

			$this->backtrace_log[] = utf8_htmlspecialchars($message, ENT_COMPAT);

* Encodes the given string for proper display in UTF-8.

 * Encodes the given string for proper display in UTF-8 or US-ASCII.

* This version is using base64 encoded data. The downside of this
* is if the mail client does not understand this encoding the user
* is basically doomed with an unreadable subject.

 * This version is based on iconv_mime_encode() implementation
 * from symfomy/polyfill-iconv
 * https://github.com/symfony/polyfill-iconv/blob/fd324208ec59a39ebe776e6e9ec5540ad4f40aaa/Iconv.php#L355

* Please note that this version fully supports RFC 2045 section 6.8.

 * @param string $str
 * @param string $eol Lines delimiter (optional to be backwards compatible)

* @param string $eol End of line we are using (optional to be backwards compatible)

 * @return string

	// define start delimimter, end delimiter and spacer
	$start = "=?UTF-8?B?";
	$end = "?=";
	$delimiter = "$eol ";

	// Check if string contains ASCII only characters
	$is_ascii = strlen($str) === utf8_strlen($str);

	// Maximum length is 75. $split_length *must* be a multiple of 4, but <= 75 - strlen($start . $delimiter . $end)!!!
	$split_length = 60;
	$encoded_str = base64_encode($str);

	$scheme = $is_ascii ? 'Q' : 'B';

	// If encoded string meets the limits, we just return with the correct data.
	if (strlen($encoded_str) <= $split_length)

	// Define start delimiter, end delimiter
	// Use the Quoted-Printable encoding for ASCII strings to avoid unnecessary encoding in Base64
	$start = '=?' . ($is_ascii ? 'US-ASCII' : 'UTF-8') . '?' . $scheme . '?';
	$end = '?=';

	// Maximum encoded-word length is 75 as per RFC 2047 section 2.
	// $split_length *must* be a multiple of 4, but <= 75 - strlen($start . $eol . $end)!!!
	$split_length = 75 - strlen($start . $eol . $end);
	$split_length = $split_length - $split_length % 4;

	$line_length = strlen($start) + strlen($end);
	$line_offset = strlen($start) + 1;
	$line_data = '';

	$is_quoted_printable = 'Q' === $scheme;

	preg_match_all('/./us', $str, $chars);
	$chars = $chars[0] ?? [];

	$str = [];
	foreach ($chars as $char)

		return $start . $encoded_str . $end;
	}

		$encoded_char = $is_quoted_printable
			? $char = preg_replace_callback(
				'/[()<>@,;:\\\\".\[\]=_?\x20\x00-\x1F\x80-\xFF]/',
				function ($matches)
				{
					$hex = dechex(ord($matches[0]));
					$hex = strlen($hex) == 1 ? "0$hex" : $hex;
					return '=' . strtoupper($hex);
				},
				$char
			)
			: base64_encode($line_data . $char);

	// If there is only ASCII data, we just return what we want, correctly splitting the lines.
	if (strlen($str) === utf8_strlen($str))

		if (isset($encoded_char[$split_length - $line_length]))

		return $start . implode($end . $delimiter . $start, str_split($encoded_str, $split_length)) . $end;

			if (!$is_quoted_printable)
			{
				$line_data = base64_encode($line_data);
			}
			$str[] = $start . $line_data . $end;
			$line_length = $line_offset;
			$line_data = '';

	// UTF-8 data, compose encoded lines
	$array = utf8_str_split($str);
	$str = '';

		$line_data .= $char;
		$is_quoted_printable && $line_length += strlen($char);
	}

	while (count($array))

	if ($line_data !== '')

		$text = '';

		while (count($array) && intval((strlen($text . $array[0]) + 2) / 3) << 2 <= $split_length)

		if (!$is_quoted_printable)

			$text .= array_shift($array);

			$line_data = base64_encode($line_data);

		$str .= $start . base64_encode($text) . $end . $delimiter;

		$str[] = $start . $line_data . $end;

	return substr($str, 0, -strlen($delimiter));

	return implode($eol . ' ', $str);

	global $config, $phpbb_root_path, $phpEx;

	global $config, $phpbb_root_path, $phpEx, $phpbb_dispatcher;