$participants = get_participant_id($provider_id);
    $version = get_version();
    
    if( $provider_type == 'nurse' ){
        //$sql = "SELECT msg_part.`participant_chat_id`, msg_part.`participant_id`, msg_part.`user_chat_id`, users.user_type, msg_chat.last_update, msg_chat.status_nurse, msg_chat.status_doctor FROM `messenger_participants` as msg_part INNER JOIN all_users as users ON (msg_part.user_chat_id = users.userid) INNER JOIN messenger_chat_room as msg_chat ON (msg_part.participant_id = msg_chat.participant_id) WHERE msg_part.user_chat_id != '$provider_id' AND users.user_type != 4 AND users.user_type != 2 ORDER BY msg_chat.last_update DESC";
        $sql = "SELECT msg_part.`participant_chat_id`, msg_part.`participant_id`, msg_part.`user_chat_id`, users.user_type, msg_chat.last_update, msg_chat.status_nurse, msg_chat.status_doctor FROM `messenger_participants` as msg_part INNER JOIN all_users as users ON (msg_part.user_chat_id = users.userid) INNER JOIN messenger_chat_room as msg_chat ON (msg_part.participant_id = msg_chat.participant_id) WHERE msg_part.user_chat_id != '$provider_id' AND users.user_type != 4 AND users.user_type != 2 AND users.groupid = '$version' ORDER BY msg_chat.last_update DESC";
    }elseif( $provider_type == 'physician' ){
        //$sql = "SELECT msg_part.`participant_chat_id`, msg_part.`participant_id`, msg_part.`user_chat_id`, users.user_type, msg_chat.last_update, msg_chat.status_nurse, msg_chat.status_doctor FROM `messenger_participants` as msg_part INNER JOIN all_users as users ON (msg_part.user_chat_id = users.userid) INNER JOIN messenger_chat_room as msg_chat ON (msg_part.participant_id = msg_chat.participant_id) WHERE msg_part.participant_id IN ($participants) AND msg_part.user_chat_id != 4 AND users.user_type != 4 AND users.user_type != 2 ORDER BY msg_chat.last_update DESC";
        $sql = "SELECT msg_part.`participant_chat_id`, msg_part.`participant_id`, msg_part.`user_chat_id`, users.user_type, msg_chat.last_update, msg_chat.status_nurse, msg_chat.status_doctor FROM `messenger_participants` as msg_part INNER JOIN all_users as users ON (msg_part.user_chat_id = users.userid) INNER JOIN messenger_chat_room as msg_chat ON (msg_part.participant_id = msg_chat.participant_id) WHERE msg_part.participant_id IN ($participants) AND msg_part.user_chat_id != 4 AND users.user_type != 4 AND users.user_type != 2 AND users.groupid = '$version' ORDER BY msg_chat.last_update DESC";
    }