What are the best practices for naming variables in PHP form submissions to enhance code readability and maintainability?

When naming variables in PHP form submissions, it is important to use descriptive and meaningful names that accurately represent the data being submitted. This enhances code readability and maintainability by making it easier for other developers to understand the purpose of each variable. Additionally, it is recommended to follow a consistent naming convention, such as camelCase or snake_case, to ensure uniformity throughout the codebase.

// Example of naming variables in a PHP form submission
$name = $_POST['user_name'];
$email = $_POST['user_email'];
$age = $_POST['user_age'];