if($_SERVER['REQUEST_METHOD'] == 'POST') { $name = $_POST['name']; if(empty($name)) { $errors['name'] = 'Name is required'; } if(count($errors) > 0) { // handle errors } else { // process form } }In this example, we check for errors in a form submission. If the `name` field is empty, we add an error message to the `$errors` array. After all the validations have been performed, we check if there are any errors using the `hasError` method. Package/Library: Based on the code example, it is not clear which package or library is being used. The code seems to be using standard PHP functions and features for form submissions and error checking.