snippet.php

<?php

$passwordConfirmation = new App_Validate_PasswordConfirmation();
		
$password = $this->addElement('password', 'password', array(
	'filters'    => array('StringTrim'),
	'validators' => array(
		$passwordConfirmation,
		array('Alnum'),
		array('StringLength', false, array(6, 100)),
	),
	'class'      => 'input-text',
	'required'   => true,
	'label'      => 'Password',
));

$password_confirm = $this->addElement('password', 'password_confirm', array(
	'filters'    => array('StringTrim'),
	'validators' => array(
		$passwordConfirmation,
		array('Alnum'),
		array('StringLength', false, array(6, 100)),
	),
	'class'      => 'input-text',
	'required'   => true,
	'label'      => 'Confirm Password',
));