CSearchFullText::getInstance

static function getInstance()
{
	if (!isset(static::$instance))
	{
		$full_text_engine = COption::GetOptionString("search", "full_text_engine");
		if ($full_text_engine === "sphinx")
		{
			self::$instance = new CSearchSphinx;
			self::$instance->connect(
				COption::GetOptionString("search", "sphinx_connection"),
				COption::GetOptionString("search", "sphinx_index_name")
			);
		}
		elseif ($full_text_engine === "mysql")
		{
			self::$instance = new CSearchMysql;
			self::$instance->connect();
		}
		else
		{
			self::$instance = new CSearchStemTable();
		}
	}
	return static::$instance;
}