Updated Identity Support from SDK Core

- Moved PPModels required for Identity Support

sample/payments/ExecuteAuth.php

@@ -0,0 +1,39 @@
+<?php
+// #Execute Payment Sample
+// This sample shows how you can complete
+// a payment that has been approved by
+// the buyer by logging into paypal site.
+// You can optionally update transaction
+// information by passing in one or more transactions.
+// API used: POST '/v1/payments/payment/<payment-id>/execute'.
+
+require __DIR__ . '/../bootstrap.php';
+
+$clientId = 'AYSq3RDGsmBLJE-otTkBtM-jBRd1TCQwFf9RGfwddNXWz0uFU9ztymylOhRS';
+$clientSecret = 'EGnHDxD_qRPdaLdZz8iCr8N7_MzF-YHPTkjs6NKYQvQSBngp4PTTVWkPZRbL';
+
+use PayPal\Api\ExecutePayment;
+use PayPal\Api\Payment;
+use PayPal\Api\PaymentExecution;
+session_start();
+if(isset($_GET['success']) && $_GET['success'] == 'true') {
+
+
+    $code = $_GET['code'];
+
+    $params = array(
+        'code' => $code,
+        'redirect_uri' => getBaseUrl() . '/ExecuteAuth.php?success=true',
+        'client_id' => $clientId,
+        'client_secret' => $clientSecret
+    );
+    try {
+        $accessToken = \PayPal\Auth\Openid\PPOpenIdTokeninfo::createFromAuthorizationCode($params, $clientId, $clientSecret, $apiContext);
+    } catch (PayPal\Exception\PPConnectionException $ex) {
+            echo "Exception: " . $ex->getMessage() . PHP_EOL;
+            var_dump($ex->getData());
+            exit(1);
+    }
+    echo $accessToken->toJSON(JSON_PRETTY_PRINT);
+
+}