Php 如何在mysql中使用order和between

我在mysql代码中使用Order和Between时遇到问题：

<?php 

$connection = mysqli_connect("localhost","my_user","my_password","my_db");
$id = $_GET["id"];
$query = "Select * from my_data where id between ($id+1) and ($id+4)";
$result = mysqli_query($connection,$query);
while ($row = mysqli_fetch_assoc($result)) {

    $array[] = $row;    
}
header('Content-Type:Application/json');
echo json_encode($array);?>

我希望输出按id降序排列

---

请帮助我

那么您想先输入id最高的条目吗？那么应该是这样的:

Select * from my_data where id between ($id+1) and ($id+4) ORDER BY id DESC

$query=“从my_数据中选择*，其中id介于（$id+1）和（$id+4）之间，按id描述排序”

注意处理查询时的SQL注入方式

试试这个

<?php 
$connection = mysqli_connect("localhost","my_user","my_password","my_db");
$id = $_GET["id"];
$query ="";
$query.= "Select * from my_data where id between ($id+1) and ($id+4)";
$query.= " order by id DESC"; //concat query as per requirement. 
$result = mysqli_query($connection,$query);
while ($row = mysqli_fetch_assoc($result)) {

    $array[] = $row;    
}
header('Content-Type:Application/json');
echo json_encode($array);
?>  

您还可以通过在变量上设置按字段名传递订单和按类型传递订单（asc/desc）。 请随时询问任何有关它的问题

让我们试试这个：

我已经添加了一个额外的

order

参数，如果未设置该参数，则它将给出降序，否则将其设置为

&order=asc

，以加入订单结果。对字段中的

id

执行排序

更新数据库连接设置

<?php 

   //kindly change connection parameter as per you need
    $connection = mysqli_connect("localhost","root","","test");
   $id = $_GET["id"];

   isset( $_GET['order']) ? $order =$_GET['order'] : $order= 'desc';

   if($order === 'asc'){
       $query = "Select * from person where id between ($id+1) and ($id+4) order by id asc";
   }else{
       $query = "Select * from person where id between ($id+1) and ($id+4) order by id desc";
   }


  $result = mysqli_query($connection,$query);
 while ($row = mysqli_fetch_assoc($result)) {
    $array[] = $row;    
 }
 header('Content-Type:Application/json');

    echo json_encode($array);
?>

**请注意URL**

输出ASC

输出描述

---

首先，请访问了解SQL注入以及如何防止SQL注入。对于订单内容：

orderbyid DESC

从my_数据中选择*，其中id介于（$id+1）和（$id+4）orderbyid DESC

-您也可以从DESC更改为ASC