Webapp/index.php at master · toooadi/Webapp · GitHub

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<?php
    include 'headerNav.php';
?>


<form>
    <input type="text" name="num1" placeholder="Number 1">
    <input type="text" name="num2" placeholder="Number 2">

    <select name="operation">
        <option>None</option>
        <option>Add</option>
        <option>Subtract</option>
        <option>Multiply</option>
        <option>Divide</option>
    </select>
    <br>
    <button type="submit" name="submit" value="submit">Calculate</button>

</form>
<p> The answer is: </p>

<?php
    if (isset($_GET['submit'])) {
        $result1 = $_GET['num1'];
        $result2 = $_GET['num2'];
        $operator = $_GET['operation'];
        switch ($operator) {
            case "None":
                echo "Need to select operator";
                break;
            case "Add":
                echo $result1 + $result2;
                break;
            case "Subtract":
                echo $result1 - $result2;
                break;
            case "Multiply":
                echo $result1 * $result2;
                break;
            case "Divide":
                echo $result1 / $result2;
                break;
        }

    }
?>

</body>
</html>