How can PHP handle more complex form data structures to improve code readability and efficiency?

When dealing with more complex form data structures in PHP, it is beneficial to use arrays to organize the data. This not only improves code readability but also makes it easier to access and manipulate the form data efficiently. By structuring the form data in arrays, you can easily loop through the data, perform validations, and process the information in a more organized manner.

// Example of handling form data with arrays in PHP

// Assuming form data is submitted via POST method
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Accessing form data using arrays
    $name = $_POST['user']['name'];
    $email = $_POST['user']['email'];
    
    // Processing the form data
    // Perform validation, sanitization, and other operations
    
    // Example of looping through form data
    foreach ($_POST['items'] as $item) {
        // Process each item
    }
}