/**
* get the code from the user activation key stored in the database
*
* @global WordPress Database Access Abstraction Object $wpdb Wordpress database
*
* @param string $user_login user's login name
*/
private static function get_retrieval_code($user_login)
{
global $wpdb;
if (!is_string($user_login)) {
return null;
}
$code_query = $wpdb->prepare("SELECT user_activation_key FROM {$wpdb->users} WHERE user_login = %s", $user_login);
return Handlers::generate_pin_code($wpdb->get_var($code_query));
}
