<?php
//Initializing variables
$a = 10;
$b = 5;
echo("1. Addition <br>");
echo("2. Subtraction <br>");
echo("3. Multiplication <br>");
echo("4. Division <br>");
$ch=3;
switch ($ch)
{
   case 1:
   $d=$a+$b;
   echo("The sum of the two numbers is $d");
   break;
   case 2:
   $d=$a-$b;
   echo("The difference of the two numbers is $d");
   break;
   case 3:
   $d=$a*$b;
   echo("The product of the two numbers is $d");
   break;
   case 4:
   $d=$a/$b;
   echo("The quotient of the two numbers is $d");
   break;
   default:
   echo("Incorrect Option");
   break;
}
?>