#Zend - validate input

<?php
if ($this->_request->isPost()) {
    $filters = array(
        'x'  => array('HtmlEntities', 'StripTags', 'StringTrim'),
        'y'  => array('HtmlEntities', 'StripTags', 'StringTrim')
    );
    $validators = array(
    'x'      => array('NotEmpty', 'Int'),
    'y'      => array(
            'Alpha',
            array('InArray', 'haystack' => array('Title', 'Date'))
            );

    // validate inputs
    $input = new Zend_Filter_Input ($filters, $validators);
    $input->setData($this->_request->getpost());

    if ($input->isValid()) {
        //
    }