posting data using Curl in php - php

Question

I have two array of objects that I want to post to an API but it displays an error missing value for parameter: productDC
it seems that i have to pass ProductDc and buyerDC along with their data. for this I also tried
$data_string = array({ProductDc"product_name" => "Electronics","price" => "200 usd"},
buyerDC{"buyer_name" => "john mark","address" => "17 more strret"});
below is the informations
1.) ProductDC
pass it as array of objects
**product_name(string)
price (string)**
2.) buyerDC
pass it as array of objects
**buyer_name(string)
address (string**)
here is my code
<?php
$data_string = array("product_name" => "Electronics","price" => "200 usd",
"buyer_name" => "john mark","address" => "17 more strret");
$data = json_encode($data_string);
//$data = $data_string;
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "myapi.com",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "$data",
CURLOPT_HTTPHEADER => array(
"accept: application/json",
"content-type: application/json; charset=utf-8"
),
));
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}
?>

Answer 1

Considering below information that you have provided if they want a data in the format in which -
1.) ProductDC should be an array of objects containing -
product_name(string)
price (string)
2.) buyerDC should be array of objects containing-
buyer_name(string)
address (string)
Probably they are expecting the data in a different form which you may get by changing $data_string value as below -
$data_string = array(
"ProductDc"=>array(
"product_name" => "Electronics",
"price" => "200 usd"
),
"buyerDC"=>array(
"buyer_name" => "john mark",
"address" => "17 more strret"
)
);
Change your $data_string value to the one I posted above and check.