POST JSON MULTIDIMENSIONAL PHP not working - php

Question

I have try to create post curl json array multidimensional but the result is NULL
i dont know why is not working.
this is my code
$d = array('code' => 1111, 'number' => "08813812");
$array = array('content' => $d);
$result = json_encode($d);
// echo $result;
$data = array(
'content' => $d,
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://localhost/receive-callback.php");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"cache-control: no-cache",
"postman-token: 701ab5b6-002e-a982-0cfd-c6eee34ae7e1",
"Content-Type: application/json"
));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
$response = curl_exec($ch);
echo $response;
this is for receive the post
$d = $_POST['content'];
// file_put_contents('hehe.txt', $d);
print(json_encode($d, JSON_PRETTY_PRINT));
// $ho = json_decode($d);
// echo $d['code'];
in this case , i want the result in receiver is value from object array content

Answer 1

Change your code with the following:-
$d = array('code' => 1111, 'number' => "08813812");
$array = array('content' => $d);
$result = json_encode($d);
// echo $result;
$data = array(
'content' => $d
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://localhost/stackoverflow/receive-callback.php");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"cache-control: no-cache",
"postman-token: 701ab5b6-002e-a982-0cfd-c6eee34ae7e1",
"Content-Type: application/json"
));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
$response = curl_exec($ch);
echo $response;
To receive use the follwoing :-
$data = json_decode(file_get_contents('php://input'), true);
print_r($data);