send multiple json data into api - php

Question

I want to send these three array data into the external api. For that firstly I encode this into JSON, but always it sends the last array.
$params = array( array('receiverName' => 'sample_name',
'receiverEmail' => 'krishanuniyalas#gmail.com',
'senderEmail' => 'info#hotelpalacio.net',
'roomNumber' => '12456',
'accessToken' =>'ca5629d0-6810-11e8-9d40-d7194ac0ac8d'),array('receiverName' => 'sample_name',
'receiverEmail' => 'karamuniyalas#gmail.com',
'senderEmail' => 'info#hotelpalacio.net',
'roomNumber' => '12456',
'accessToken' =>'ca5629d0-6810-11e8-9d40-d7194ac0ac8d'),array('receiverName' => 'sample_name',
'receiverEmail' => 'krishanuniyalas#gmail.com',
'senderEmail' => 'info#hotelpalacio.net',
'roomNumber' => '12456',
'accessToken' =>'ca5629d0-6810-11e8-9d40-d7194ac0ac8d'));
$data_string = json_encode($params);
foreach($params as $pa) {
$r=json_encode($pa);
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $r);

Answer 1

Here 's a working example ...
$data = [
[
'a' => 'bla',
],
[
'b' => 'blubb',
],
];
$handle = curl_init();
curl_setopt($handle, CURLOPT_URL, "http://www.example.com/");
curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
$result = [];
foreach ($data as $value) {
$json = json_encode($value);
curl_setopt($handle, CURLOPT_POSTFIELDS, $json);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'Content-Type: application/json',
'Content-Length: ' . strlen($json),
]);
$result[] = curl_exec($handle);
}
Open a valid curl resource and set the corresponding curl options for your purpose. You want to send a json string as post request. Furthermore you should tell the other side, that you send json data. Say curl, that you 're awaiting a response and the fire every time running through the foreach loop. That 's all ...
If you want to send the whole data at once leave out the foreach loop end encode the whole data array and send it.

Answer 2

You need to just create a simple query params like $data = http_build_query($params)
And then pass data to your curl_setopt($ch,CURLOPT_POSTFIELDS,$data);