php – PDO截断字符串参数

public static function insertSistema($name,$description,$created_at,$updated_at,$img_file_name,$img_content_type,$img_file_size,$img_updated_at,$visible,$access_floors,$access_procedures,$access_datas,$access_histories,$access_incidences,$access_operations,$access_reports,$access_messagings)
{
    $conector = new Conexion("localhost","xrem_prueba");
    try
    {
        $con = $conector->Conectar();
        $con->exec('SET CHARACTER SET utf8');
        $con->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
        $consulta = $con->prepare("INSERT INTO systems (name,created_at,updated_at,img_file_name,img_content_type,img_file_size,img_updated_at,visible,description,access_floors,access_procedures,access_datas,access_histories,access_incidences,access_operations,access_reports,access_messagings ) VALUES (:name,:created_at,:updated_at,:img_file_name,:img_content_type,:img_file_size,:img_updated_at,:visible,:description,:access_floors,:access_procedures,:access_datas,:access_histories,:access_incidences,:access_operations,:access_reports,:access_messagings);");
        $consulta->bindParam(':name',$name,PDO::PARAM_STR,57);
        $consulta->bindParam(':description',PDO::PARAM_STR);
        $consulta->bindParam(':created_at',PDO::PARAM_STR);
        $consulta->bindParam(':updated_at',PDO::PARAM_STR);
        $consulta->bindParam(':img_file_name',255);
        $consulta->bindParam(':img_content_type',255);
        $consulta->bindParam(':img_file_size',PDO::PARAM_INT);
        $consulta->bindParam(':img_updated_at',PDO::PARAM_INT);
        $consulta->bindParam(':visible',PDO::PARAM_INT,1);
        $consulta->bindParam(':access_floors',1);
        $consulta->bindParam(':access_procedures',1);
        $consulta->bindParam(':access_datas',1);
        $consulta->bindParam(':access_histories',1);
        $consulta->bindParam(':access_incidences',1);
        $consulta->bindParam(':access_operations',1);
        $consulta->bindParam(':access_reports',1);
        $consulta->bindParam(':access_messagings',$access_messagings,1);
        $datos = array('name'=>$name,'description'=>$description,'created_at'=>$created_at,'updated_at'=>$updated_at,'img_file_name'=>$img_file_name,'img_content_type'=>$img_content_type,'img_file_size'=>$img_file_size,'img_updated_at'=>$img_updated_at,'visible'=>$visible,'access_floors'=>$access_floors,'access_procedures'=>$access_procedures,'access_datas'=>$access_datas,'access_histories'=>$access_histories,'access_incidences'=>$access_incidences,'access_operations'=>$access_operations,'access_reports'=>$access_reports,'access_messagings'=>$access_messagings
        );
        $consulta->execute($datos);
        $conector = null;
        $con = null;
        return $consulta;
    }
    catch (Exception $e)
    {
        $conector = null;
        $con = null;
        throw $e;
    }
}

如你所见,我有这个$consulta-> bindParam(‘：name’,PDO :: PARAM_STR,57);第10行：bindParam选项,它支持截断57个字符的长度,但它会插入任何类型的字符,因此它不会截断.