FIND:

 NOTE --- Removing trailing whitespaces

	$username = phpbb_rtrim($username, "\\");	

REPLACE WITH:

	$username = phpbb_rtrim($username, "\\");

FIND:

// added at phpBB 2.0.12 to fix a bug in PHP 4.3.10 (only supporting charlist in php >= 4.1.0)
function phpbb_rtrim($str, $charlist = false)

BEFORE, ADD:

/**
* This function is a wrapper for ltrim, as charlist is only supported in php >= 4.1.0
* Added in phpBB 2.0.18
*/
function phpbb_ltrim($str, $charlist = false)
{
	if ($charlist === false)
	{
		return ltrim($str);
	}
	
	$php_version = explode('.', PHP_VERSION);

	// php version < 4.1.0
	if ((int) $php_version[0] < 4 || ((int) $php_version[0] == 4 && (int) $php_version[1] < 1))
	{
		while ($str{0} == $charlist)
		{
			$str = substr($str, 1);
		}
	}
	else
	{
		$str = ltrim($str, $charlist);
	}

	return $str;
}

FIND:

			$orig_word[] = '#\b(' . str_replace('\*', '\w*?', phpbb_preg_quote($row['word'], '#')) . ')\b#i';

REPLACE WITH:

			$orig_word[] = '#\b(' . str_replace('\*', '\w*?', preg_quote($row['word'], '#')) . ')\b#i';