how to serialize() mysql update data

Hi I want to make the serialized reading value 1 or 0 in mysql, how can I do

example code

 $query =  $wpdb->get_results('select * from wp_options where option_id = 96');


    $dizi =   unserialize($query[0]->option_value);
     
      // echo $dizi['subscriber']['capabilities']['read'];

       //print_r($dizi);

   if(array_key_exists('read', $dizi['subscriber']['capabilities'])){


       echo $dizi['subscriber']['capabilities']['read'] = 0;
       

   }

   exit;