What best practices should be followed when dynamically generating form elements in PHP for database insertion?

When dynamically generating form elements in PHP for database insertion, it's important to properly sanitize user input to prevent SQL injection attacks. Additionally, ensure that the form fields are properly validated before inserting the data into the database to maintain data integrity. Lastly, use prepared statements or parameterized queries to securely insert the form data into the database. 

<?php

// Sanitize user input
$name = filter_var($_POST['name'], FILTER_SANITIZE_STRING);
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);

// Validate form fields
if(empty($name) || empty($email)) {
    // Handle validation errors
    die("Error: Name and email are required.");
}

// Insert data into database using prepared statements
$stmt = $pdo->prepare("INSERT INTO users (name, email) VALUES (:name, :email)");
$stmt->bindParam(':name', $name);
$stmt->bindParam(':email', $email);
$stmt->execute();

echo "Data inserted successfully.";

?>

Keywords

SQL injection prepared statements PDO form validation data sanitization

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