What are some best practices for handling form submission in PHP within a Wordpress environment to ensure data persistence?

When handling form submissions in PHP within a WordPress environment, it is important to ensure data persistence by properly validating and sanitizing user input before processing it. One best practice is to use WordPress functions like `sanitize_text_field()` and `wp_kses()` to sanitize user input and prevent SQL injection and cross-site scripting attacks. Additionally, storing form data in WordPress options or custom post types can help maintain data integrity and persistence.

// Example of handling form submission in WordPress environment
if( isset( $_POST['submit'] ) ) {
    $name = sanitize_text_field( $_POST['name'] );
    $email = sanitize_email( $_POST['email'] );
    
    // Additional validation and processing of form data
    
    // Store form data in WordPress options
    update_option( 'form_data_name', $name );
    update_option( 'form_data_email', $email );
}