title: QuickBooks REST API v3.0 ( PHP SDK ) Integration
body: <p>I have installed PHP SDK for quickbook.</p>
  
  <p>I have configured,</p>
  
  <pre><code> AccessTokenSecret
   ConsumerKey
   ConsumerSecret
   RealmID
  </code></pre>
  
  <p>When i was executin the file create_customer.php  </p>
  
  <p>(v3-php-sdk-1.0.0/_Samples/create_customer.php).</p>
  
  <h2>I'm having this error,</h2>
  
  <h2>Fatal error: Class 'OAuth' not found in D:\wamp\www\QB\Core\RestCalls\SyncRestHandler.php on line 194</h2>
  
  <p>I couldnot find the class OAuth . I have entire SDK folder, but i couldn't find. 
  Can any one help me regarding this issue.</p>
  
  <p>I am very much in need of it.</p>
  
  <p>Thanks in advance..!</p>