What are the advantages of using PEAR::HTML_QuickForm package for creating, validating, and processing HTML forms in PHP?

The PEAR::HTML_QuickForm package provides a convenient way to create, validate, and process HTML forms in PHP. It offers a simple and efficient way to generate form elements, handle validation rules, and process form submissions. By using this package, developers can save time and effort in building and maintaining complex forms in their PHP applications.

<?php
require_once 'HTML/QuickForm.php';

$form = new HTML_QuickForm('myForm', 'POST', 'submit.php');

$form->addElement('text', 'username', 'Username:', ['size' => 20, 'maxlength' => 50, 'required' => true]);
$form->addElement('password', 'password', 'Password:', ['size' => 20, 'maxlength' => 50, 'required' => true]);

$form->addElement('submit', 'submit', 'Submit');

if ($form->validate()) {
    $values = $form->exportValues();
    // Process form submission
} else {
    $form->display();
}
?>