Posting JSON and parsing it with php://input is not working

Question

I want to create an object by sending a json to my webserver and parsing the information.

My javascript looks like this:

import { HTTP } from '@ionic-native/http/ngx';

....

constructor(private http: HTTP){}

...

  // combining and sending the information below 
  createMediaObject(): Observable<any> {
    var url = `${ApiServerUrl}/add_mo`;
    url = encodeURI(url);

    var convertedData = {
        type: "Feature",
        geometry: {
          type: "Point",
          coordinates: [Number(this.mediaObjectForm.value.lng).toString(), Number(this.mediaObjectForm.value.lat).toString()]
        },
        properties: {
          icon: this.mediaObjectForm.value.icon.toString(),
          tags: this.mediaObjectForm.value.tags.toString(),
          topic: this.mediaObjectForm.value.topic.toString(),
          title: this.mediaObjectForm.value.name.toString(),
          description: this.mediaObjectForm.value.description.toString(),
          rotation: this.rotation.toString(),
          media: this.mediaObjectForm.value.contents.toString()
        }
      };

    return from(this.http.post(url, convertedData, {})).pipe(map(res => res.data));
  }

Now I want to parse the informatik in php using the solution from this post get POSTed JSON Array in php:

$params = json_decode(file_get_contents("php://input"), true);

echo json_encode(array("status" => empty($params)));

try {
    // get posted data
    echo $params["type"];
    if (isset($params["properties"]["topic"])) {
        $object->topic = $params["properties"]["topic"];
        echo $object->topic;
    }

However:

echo json_encode(array("status" => empty($params)));

Output: {"status" : "true"} -> that means that something went wrong and params is empty

same with

echo $object->topic;

Output: null

Is there a problem in the frontend or backend? Do I need to change something inside of my configs?

What do you get if you do `var_dump(file_get_contents("php://input"));`? — aynber, Dec 13 '19 at 14:02
But is it a valid json string? You can validate it at https://jsonlint.com — aynber, Dec 13 '19 at 14:15
I think the https messed up the json and converted it to a string — Huondui, Dec 13 '19 at 14:19
The json should be a string, and `json_decode` should decode it. What do you get if you `var_dump($params);`? — aynber, Dec 13 '19 at 14:20
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/204213/discussion-between-php-n00b-and-aynber). — Huondui, Dec 13 '19 at 14:26

Posting JSON and parsing it with php://input is not working

0 Answers0