title: mongodb document insertion crashes with size error 8mb
body: <p>I am inserting an array in MongoDb using php .First i was getting error that max limit is 16 MB. Now i am getting the following error<br></p>
  
  <pre><code>Fatal error: Uncaught exception 'MongoException' with message 'document fragment is too large: 8516075, max: 8388608'.
  </code></pre>
  
  <p><br>Please Explain this and the wayaround of this</p>