title: json_decode on retrieved json string from mysql does not work
body: <p>I have a string json that gives the following var dump:</p>
  
  <pre><code>"[[{"TransactionID":"00416","OrderID":"000926","TransactionOrderItemID":"001123","LastUpdate":"2009-10-28 13:03:31","CustomerID":"184","Company_name":"Test123","Invoiced":"0","SubItemsCount":"2","ProductID":"1","ProductTypesID":"1","ProductTypeName":"Phone","ProductName":"Phone Line (Home)","IncludePST":"1","BillType":"Monthly","BillingCycle":"Monthly","Status":"Active","CreationDate":"2009-10-28","ActivationStartDate":"2009-10-28","NextNotificationDate":"2009-10-27","OverWritePrice":"-1","PriceEconomic":"26.00","BasePrice":"26.0000","ProRate":"Yes","InvoicePrice":"3.35","ServicePeriod":" Pro-Rate: Oct-28-2009 - Oct-31-2009","EndDate":"2009-10-31"}]]"
  </code></pre>
  
  <p>When I try to decode as:</p>
  
  <pre><code>json_decode( $json, true);
  </code></pre>
  
  <p>The result is just null.  $json is from db.<br>
  Note that I am only showing a subset of full data.
  The questions is, this is variable from db.  If double quote is the problem, how to cast it?</p>