Questions to implement a web service

Question

I have a question about the implementation of a web service, look at the logic:

I have a process that searches the data of several users in a system (system A), and I want to take this data and send to another system (system B), in both cases the systems are written in PHP.

This way I have the following script to fetch the user data from system A

export.php file

    <?php
//busca os dados do banco do sistema A   

$r = mysqli_fetch_array($q);

//API Url
$url = 'migracao/import_usuario.php';

//Initiate cURL.
$ch = curl_init($url);

$jsonData = json_encode($r);

curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData );
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json',
        'Content-Length: ' . strlen($jsonData ))
);

$result = curl_exec($ch);

In my other file, already in system B, called import_php. i wanted to receive data passed through CURL to use it in a data insertion method.

import_usuario.php fileis

<?php

new Usuario($usuario); // No caso a variável $usuario seria os dados recebidos atraves CURL

Curl is calling the page correctly, because if you print in import_usuario.php it is printed normally

Debt is like receiving data passed through php’s Curl

Answer 1

The solution implemented was the one that Andre reported by the following link:

Remote REST webservice in PHP receiving JSON via POST with problems