PHP - 在后台从文件返回JSON

I have a problem:

I need to return a server response to a request while redirecting the response back to my html page.

My request runs through following process:

1. POST via HTML form

2. createobject.php gets the information from the POST and calls the method create of the class Object

   $object->create();

3. the method create in object runs the code and returns true of false

   Here is my problem, I need to send echo $this->conn->lastInsertId(); as a response to the server

4. createobject.php redirects the request back to the HTML page

5. User sees whether the insert was successful

Step 1 and 5 are for testing only, I need the response in createobject.php

You can passing your response when redirecting to HTML page. redirect like this.

header('Location: http://example.com?json='. urlencode($json));

Then access it from HTML page use php or use javascript.

From php you can do like this

$data = json_decode($_GET["json"]);

From javascript this reference will help you to get the parameter json from current url

How to get the value from the GET parameters?

after get the json param you just need to

let json = getParam("json");
let data = JSON.parse(json);

getParam function you can create using above url. :)