How to '$_POST' back to the same page or to a different result page in php? [closed]

Answer 1

 

 First Number: 
 

 Second Number: 



 Add

 Subtract

 Multiply

 Divide







 method="post">
First Number: 


Second Number: 



 Add

 Subtract

 Multiply

 Divide







";
 break;
case "2":
 echo "Result: ", $_POST['firstNum']-$_POST['secondNum'], "
";
 break;
case "3":
 echo "Result: ", $_POST['firstNum']*$_POST['secondNum'], "
";
 break;
case "4":
 echo "Result: ", $_POST['firstNum']/$_POST['secondNum'], "
";
 break;
default:
break;
}
?>

and with the same info.php as before

";
 break;
case "2":
 echo "Result: ", $_POST['firstNum']-$_POST['secondNum'], "
";
 break;
case "3":
echo "Result: ", $_POST['firstNum']*$_POST['secondNum'], "
";
 break;
case "4":
echo "Result: ", $_POST['firstNum']/$_POST['secondNum'], "
";
 break;
default:
 break;
}
?>

the problem with it is i think there is quite a lot of repeated code