How can new columns be generated from calculations based on input fields in a PHP form?

To generate new columns from calculations based on input fields in a PHP form, you can retrieve the input values using $_POST, perform the necessary calculations, and then display the results in new columns in the form. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $num1 = $_POST['num1'];
    $num2 = $_POST['num2'];
    
    $sum = $num1 + $num2;
    $product = $num1 * $num2;
    
    echo "<table border='1'>";
    echo "<tr><th>Number 1</th><th>Number 2</th><th>Sum</th><th>Product</th></tr>";
    echo "<tr><td>$num1</td><td>$num2</td><td>$sum</td><td>$product</td></tr>";
    echo "</table>";
}
?>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    Number 1: <input type="text" name="num1"><br>
    Number 2: <input type="text" name="num2"><br>
    <input type="submit" value="Calculate">
</form>

Keywords

PHP form input fields calculations columns

Related Questions