title: Not getting post value from file_get_contents('php://input')
body: <p>I am having an issue when I am using a post request on an PHP file and I am passing simple keys and values to post. For example say <code>key = productId</code> and <code>value = 123</code>.</p>
  
  <pre><code>&lt;?php
  
  $data_back = json_decode(file_get_contents('php://input'));
  
  return $data_back;
  </code></pre>
  
  <p>I am receiving nothing. Please assist.</p>