Json按id排序，将从数据库中获取答案

【问题标题】：Json sort by id which will be obtained from databaseJson按id排序，将从数据库中获取
【发布时间】：2026-01-20 14:05:01
【问题描述】：

我在 JSON 中遇到问题。我想按变量 id 的升序对 JSON 进行排序。

这是目前的 JSON 数据

{"server_response":[{"id":"9","email":"test@gmail.com=","password":"test"},{"id":"5","email":"json@gmail.com","password":"json"},{"id":"14","email":"wrong@gmail.com","password":"test"},{"id":"13","email":"mail@gmail.com=","password":"mail"}]}

我现在使用的php文件是

<?php

require_once('dbConnect.php');

$sql = "select * from users;";

$result = mysqli_query($con,$sql);

$response = array();

while($row = mysqli_fetch_array($result))
{
 array_push($response,array("id"=>$row[0],"email"=>$row[1],"password"=>$row[2]));
}

echo json_encode(array("server_response"=>$response));

mysqli_close($con);

?>

但我希望我的输出如下所示。php 文件的任何更改???

{"server_response":[{"id":"5","email":"json@gmail.com","password":"json"},{"id":"9","email":"test@gmail.com=","password":"test"},{"id":"13","email":"mail@gmail.com=","password":"mail"},{"id":"14","email":"wrong@gmail.com","password":"test"}]}

【问题讨论】：

在查询中使用 DESC 或在客户端排序

标签： php android html json

【解决方案1】：

您可以在客户端进行排序，但最好仅从服务器端进行排序。你需要做的是：

$sql = "select * from users order by id;";

这应该可行。如果您希望它按降序排列，请在 id 之后添加关键字：'desc'（不带单引号）。

【讨论】：

【解决方案2】：

试试下面的代码...

<?php

$json = '{"server_response":[{"id":"9","email":"test@gmail.com=","password":"test"},{"id":"5","email":"json@gmail.com","password":"json"},{"id":"14","email":"wrong@gmail.com","password":"test"},{"id":"13","email":"mail@gmail.com=","password":"mail"}]}
';
$arr = json_decode($json,true); //Converts your json into array

$main = $arr['server_response']; // your array for sorting

$list = array_sort($main, 'id', SORT_ASC); //makes function call
print_r($list);  //desired result

function array_sort($array, $on, $order=SORT_ASC){

    $new_array = array();
    $sortable_array = array();

    if (count($array) > 0) {
        foreach ($array as $k => $v) {
            if (is_array($v)) {
                foreach ($v as $k2 => $v2) {
                    if ($k2 == $on) {
                        $sortable_array[$k] = $v2;
                    }
                }
            } else {
                $sortable_array[$k] = $v;
            }
        }

        switch ($order) {
            case SORT_ASC:
                asort($sortable_array);
                break;
            case SORT_DESC:
                arsort($sortable_array);
                break;
        }

        foreach ($sortable_array as $k => $v) {
            $new_array[$k] = $array[$k];
        }
    }

    return $new_array;
}
?>

【讨论】：