contact form 7 - salesforce

cf7.php

add_action( 'wpcf7_before_send_mail', 'my_conversion' );
function my_conversion( $cf7 )
{
  $email = $cf7->posted_data["your-email"];
  $first_name  = $cf7->posted_data["first-name"];
  $last_name  = $cf7->posted_data["last-name"];
  $phone = $cf7->posted_data["your-phone"];
  $where = $cf7->posted_data["text-wheredoyouwanttogo"];
	$when = $cf7->posted_data["your-whendoyouwanttogo"];
	$referred = $cf7->posted_data["your-referredby"];
	$msg = $cf7->posted_data["your-message"];
	$newsletter = $cf7->posted_data["mc4wp_checkbox"];

  $post_items[] = 'oid=00Do0000000eOS9';
  $post_items[] = 'first_name=' . $first_name;
  $post_items[] = 'last_name=' . $last_name;
  $post_items[] = 'email=' . $email;
  $post_items[] = 'phone=' . $phone;
  $post_items[] = '00No000000EG3QJ='.$where;
	$post_items[] = '00No000000EG3QO='.$when;
	$post_items[] = '00No000000EG3QT='.$referred;
	$post_items[] = '00No000000EG3QY='.$msg;
	$post_items[] = '00No000000EG3Qd='.$newsletter;

  if(!empty($first_name) && !empty($last_name) && !empty($email) )
  {
    $post_string = implode ('&', $post_items);
    // Create a new cURL resource
    $ch = curl_init();

    if (curl_error($ch) != "")
    {
      // error handling
    }


		print_r($post_items);

    $con_url = 'https://www.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8';
    curl_setopt($ch, CURLOPT_URL, $con_url);
    // Set the method to POST
    curl_setopt($ch, CURLOPT_POST, 1);
    // Pass POST data
    curl_setopt( $ch, CURLOPT_POSTFIELDS, $post_string);
    curl_exec($ch); // Post to Salesforce
    curl_close($ch); // close cURL resource
  }
}