connect_errno){ die('Connect Error:'.$mysqli->connect_error); } //设置编码 $mysqli->set_charset('utf8'); $sql = "delete from `dorm_person` where id = ?"; //预处理 $mysqli_stmt=$mysqli->prepare($sql); $mysqli_stmt->bind_param('i',$id); //执行预处理语句 if($mysqli_stmt->execute()){ echo 'success'; }else{ echo $mysqli_stmt->error; } ?>