Sometimes we need to use other method to post and receive data. In php, cURL is one of the option that we can used.

In this example, we gonna POST data using cURL in json format as shown below:

       $data_string = json_encode(array('data1'=>'value1','data2'=>'value2'));
    $url = "http://example.com/curl.php";
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    $arrHeaders = array(
        'Accept:application/json',
        'Content-Length:'.strlen($data_string)
    );
    curl_setopt($curl, CURLOPT_POSTFIELDS, $data_string);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $arrHeaders);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
    $result = curl_exec($curl);
    curl_close($curl);

To receive the POST input data, we need to use file_get_contents and json_decode as shown below:

    $data = json_decode(file_get_contents('php://input'), true);

    $data1 = $data['data1'];

    $data2 = $data['data2'];