Is it advisable to modify the structure of form data before storing it in PHP, or should it be done at the frontend level?

When dealing with form data in PHP, it is generally advisable to validate and sanitize the data before storing it in a database. This can help prevent security vulnerabilities such as SQL injection or cross-site scripting attacks. While some validation can be done at the frontend level using JavaScript, it is essential to perform server-side validation as well to ensure data integrity.

// Example of modifying form data before storing it in PHP
$name = $_POST['name'];
$email = $_POST['email'];

// Sanitize and validate the form data
$name = filter_var($name, FILTER_SANITIZE_STRING);
$email = filter_var($email, FILTER_VALIDATE_EMAIL);

// Store the sanitized data in the database
// Code to store $name and $email in the database goes here