How can PHP and JavaScript work together to handle form data processing and calculations effectively on a webpage?

To handle form data processing and calculations effectively on a webpage, PHP can be used to process the form data on the server-side, while JavaScript can be used to perform client-side calculations and dynamic updates without the need for page reloads. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Retrieve form data
    $num1 = $_POST['num1'];
    $num2 = $_POST['num2'];
    
    // Perform calculation
    $result = $num1 + $num2;
    
    // Display result
    echo "The result is: " . $result;
}
?>

Keywords

PHP JavaScript form data processing calculations webpage

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