require all values in array to be matched when using where_in

[eluser]Andy UK[/eluser]
I'm very pleased to say i got it working after playing around with the solution CroNiX provided. Here is the active record/MySQL code:

Code:

// Features Filter
  if(is_array($this->session->userdata('selected_features')) && count($this->session->userdata('selected_features')) > 0)
  {
   $this->db->where_in('feat_prop_join.feature_id', $this->session->userdata('selected_features'));
   $this->db->having('count(distinct feat_prop_join.feature_id) = '. count($this->session->userdata('selected_features')), NULL, FALSE);
  }

The records are already grouped by the property.id further down