Getting json data from request with codeigniter

accounts.php

        //  curl -i -X POST -H 'Content-Type: application/son' -d '{"name": "New item", "year": "2009"}' http://localhost/api/accounts
      
        $this->load->helper("security");
      
        $stream = $this->security->xss_clean( $this->input->raw_input_stream );
      
        $new_account = json_decode(trim($stream), true);
      
        $accounts = array();
        
        $accounts[] = array('foo' => 'bar');
        $accounts[] = array('foo' => 'bar');
        $accounts[] = array('foo' => 'bar');
        $accounts[] = $new_account;
        $accounts[] = array('method' => $this->input->method());
      
      
		$this->output
             ->set_content_type('application/json')
             ->set_output(json_encode($accounts, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));