iOS Receipt validator

getReceipt.swift

if let receiptURL = NSBundle.mainBundle().appStoreReceiptURL {
    print("Fetching local receipt")
    if let receipt = NSData(contentsOfURL: receiptURL) {
        print("fetched")
        let b64 = receipt.base64EncodedStringWithOptions([]).stringByReplacingOccurrencesOfString("+", withString: "%2B")
        self.validateReceipt(b64)
    } else {
        print("Could not retrieve app store receipt")
           }
 } else {
     print("No receipt URL")
 }

iTunesReceiptValidator.php

<?php
require __DIR__ . '/vendor/autoload.php';


$receipt = $_POST['receipt'];
$sandbox = $_GET['sandbox'] == "true";
$result = verify_app_store_in_app($receipt, $sandbox);

echo $result;


function verify_app_store_in_app($receipt, $is_sandbox) 
{
	//$sandbox should be TRUE if you want to test against itunes sandbox servers
	if ($is_sandbox)
		$verify_host = "https://sandbox.itunes.apple.com/verifyReceipt";
	else
		$verify_host = "https://buy.itunes.apple.com/verifyReceipt";

	$json='{"receipt-data" : "'.$receipt.'","password" : "<<iTunes Shared Secret here>>" }';
	//opening socket to itunes

    $response = \Httpful\Request::post($verify_host)      // Build a PUT request...
    ->sendsJson()                                         // tell it we're sending (Content-Type) JSON...
    ->body($json)                                         // attach a body/payload...
    ->send();
   
   return $response;


}

["status": 21002]