Question

我有一个包含以下json数据的文本文件 -

{"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"Sorry, this message is not understandable to me."}}}
{"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"But I will learn this in next few days."}}}
{"sender":"175","time":15,"message":"update next","response":{"recipient":{"id":"17"},"message":{"text":"this will be updated next."}}}
{"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"Anything else you want to ask me?"}}}

我想根据两个标准更新第三条记录：

＆＃34; ID＆＃34;：＆＃34; 17＆＃34;
＆＃34; message＆＃34;：＆＃34; next next＆＃34;

我想要的第三条记录的输出 -

{"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"Meanwhile, please wait for our representative to get back to you."}}}

请帮我用php更新记录。

Answer 1

首先，您需要制作有效的JSON 那么你必须将JSON转换为数组然后你必须遍历数组并找到哪个项符合条件最后你改变了价值观。

JSON文件内容（文件名：items.json）：

 [
   {"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"Sorry, this message is not understandable to me."}}},
   {"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"But I will learn this in next few days."}}},
   {"sender":"175","time":15,"message":"update next","response":{"recipient":{"id":"17"},"message":{"text":"this will be updated next."}}},
   {"sender":"175","time":15,"message":"office app","response":{"recipient":{"id":"17"},"message":{"text":"Anything else you want to ask me?"}}}
 ]

下面提供了一个示例代码：

<?php

    $json = file_get_contents('items.json');
    $json_as_array = json_decode($json, true);

    $found = null;


    foreach ($json_as_array as $key => $item) 
    {
        if(strtolower($item['message']) == "update next" && $item['response']['recipient']['id'] == 17)
        { 
            $found = $key;
        }
    }


    $json_as_array[$found] = ["sender" => 175, "time" => 15, "message" => "office app", "response" => [ "recipient" => ["id" => 17], "message" => ["text" => "Meanwhile, please wait for our representative to get back to you."]]];


    $json_output = json_encode($json_as_array);
    file_put_contents('items.json', $json_output);


    echo "Done!";

?>

Answer 2

我不会写所有的代码，但存储json的正确方法，我的方式是

file_put_contents('appendData.txt', json_encode($inRadiusPostalCodes) , FILE_APPEND | LOCK_EX);

接下来当你阅读文件时，只需用

读取文件

file_get_contents();

将其存储在变量中，然后对字符串进行json_decode，然后循环遍历数组以更新所需索引的记录，如

if($index == $someindex){......}

php根据标准更新json数据

2 个答案: