Problema con SWITCH CASE

[bonaprogram]

hai sbagliato la struttura dello switch

switch ($colname){
  case 'v_products_price':
       if ($ricarico == '' || $ricarico == NULL){ $ricarico = 0; }
       $price = (($split_uploaded_filename[$col] * $ricarico) / 100) + $split_uploaded_filename[$col];
       $data_string .= $price.$tab;
       break;
  case strpos($colname,'name'):
       for ($z=1; $z<=$num_lang ; $z++){
       $data_string .= $split_uploaded_filename[$col].$z.$tab;
       }//eof for
       break;
   default: $data_string .= $split_uploaded_filename[$col].$tab;
}// eof switch