我正在使用PHPPDO，但遇到以下问题:Warning:PDOStatement::execute():SQLSTATE[HY093]:Invalidparameternumber:numberofboundvariablesdoesnotmatchnumberoftokensin/var/www/site/classes/enterprise.phponline63这是我的代码:publicfunctiongetCompaniesByCity(City$city,$options=null){$database=Connection::getConnection();if(empty