title: Get number of messages in an Amazon SQS Queue
body: <p>Just a simple question, but I can't seen to find the answer. </p>
  
  <p>Is it possible to use the API, to get the queue size (the number of messages/jobs waiting to be processed) of an AWS SQS queue?</p>
  
  <p>Preferably using cURL or the PHP SDK.</p>