* 1 — subtraction, 2 — multiplication, 3 — division, and addition otherwise.
* Having input real numbers A, B and integers N1, N2, N3 and using this function,
* perform over given A, B three operations determined by given N1, N2, N3. Output
* the result value of each operation.
*/
function Calc($A, $B, $Op)
{
switch ($Op) {
case '-':
$result = $A - $B;
break;
case '+':
$result = $A + $B;
break;
case '*':
$result = $A * $B;
break;
case '/':
$result = $A / $B;
break;
default:
$result = 'wrong operator ';
}
return $result;
}
echo 'calc ' . Calc(2, 3, '*') . '<br/>';
echo 'calc ' . Calc(3, 7, '+') . '<br/>';
echo 'calc ' . Calc(31, 35, '-') . '<br/>';
echo 'calc ' . Calc(23, 13, '/') . '<br/>';
echo 'calc ' . Calc(23, 13, '&') . '<br/>';
$n1 = $_POST['n1'];
$n2 = $_POST['n2'];
$action = $_POST['action'];
switch ($action) {
case "+":
$result = $n1 + $n2;
break;
case "-":
$result = $n1 - $n2;
break;
case "*":
$result = $n1 * $n2;
break;
case "/":
if (!$n2) {
die('division by zero is not acceptable');
} else {
$result = $n1 / $n2;
}
break;
}
}
return $result;
}
?>
<div>
<span>Result is <?php
echo Calc();
?>
</span>
</div>
