custom-gateway-using-curl.php

<?php

// data fields for POST request
$fields = array(
  "token"             => "2c4b4545a9b80dbac64f490f48cceca4",
  "firstname"         => "firstname",
  "lastname"          => "lastname",
  "cardnumber"        => "4321432143214321",
  "cardmonth"         => "03",
  "cardyear"          => "2020",
  "cvv"               => "123",
  "currency"          => "JPY",
  "customer_id[0]"    => 1,
  "contents_id[0]"    => 1,
  "contents_name[0]"  => 1,
  "amount[0]"         => "1980",
  "loginname"         => "sang4",
  "charge_type"       => "6",
  "site_id"           => "258"
);

// URL to upload to
$url = "http://api.some-company.com:8081/payment2.php";


// curl
$curl = curl_init();
$url_data = http_build_query($fields);
$boundary = uniqid();
$delimiter = '-------------' . $boundary;
$post_data = build_data_files($boundary, $fields);
var_dump($post_data);
curl_setopt_array($curl, array(
  CURLOPT_URL => $url,
  CURLOPT_RETURNTRANSFER => 1,
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POST => 1,
  CURLOPT_POSTFIELDS => $post_data,
  CURLOPT_HTTPHEADER => array(
    "Content-Type: multipart/form-data; boundary=" . $delimiter,
    "Content-Length: " . strlen($post_data)
  ),  
));

//
$response = curl_exec($curl);
$info = curl_getinfo($curl);
$err = curl_error($curl);
$result = json_decode($response, true);

curl_close($curl);

function build_data_files($boundary, $fields){
    $data = '';
    $eol = "\r\n";
    $delimiter = '-------------' . $boundary;
    foreach ($fields as $name => $content) {
        $data .= "--" . $delimiter . $eol
            . 'Content-Disposition: form-data; name="' . $name . "\"".$eol.$eol
            . $content . $eol;
    }
    $data .= "--" . $delimiter . "--".$eol;
    return $data;
}