Unable to establish connection to bitcoin using json and php
You are trying to connect to http over the https port. 

For HTTP use:


  $bitcoin = new
  jsonRPCClient('http://identifier:identiferpass@rpc.blockchain.info');


For HTTPS use:


  $bitcoin = new
  jsonRPCClient('https://identifier:identiferpass@rpc.blockchain.info');


According to the blockchain.info documentation both should work.