Datos de actualización masiva en la consulta de DB en Laravel 8

   $sqlInsert = array(
            array('id'=>1, 'temp'=>1),
            array('id'=>2, 'temp'=>2),
            array('id'=>3, 'temp'=>3),
          );

           // prepare one query
           $q = "UPDATE table_name SET temp= CASE id ";

           foreach($sqlInsert as $insert) {
               $q .= "WHEN '".$insert['id']."' THEN ".$insert['temp']." ";
           }

           $q .= "END WHERE id IN (";

           foreach($sqlInsert as $insert) {
                $q .= "'".$insert['id']."', ";
           }
           $q = rtrim($q, ", ");
           $q .= ")";
           
           // Update  
           DB::update(DB::raw($q));
Tyagi420