http://zend-framework-community.634137.n4.nabble.com/grouped-Zend-Form-text-elements-td2215827.html

Example.php

<?php
    // form initialization

    $form->addElement('zipAndTheCity', 'origin');

    // some work with form etc.

    $zip  = $form->getElement('origin')->getValue('zip');
    $city = $form->getElement('origin')->getValue('city');
?>

My_Form_Element_ZipAndTheCity.php

<?php

/** Zend_Form_Element_Xhtml */
require_once 'Zend/Form/Element/Xhtml.php';

class My_Form_Element_ZipAndTheCity extends Zend_Form_Element_Xhtml
{
    public $helper      = 'zipAndTheCity';
    protected $_isArray = true;


    public function getValue($key = null)
    {
        $value = parent::getValue();

        if (!is_array($value)) {
            $value = array(null, null);
        } else {
            // make sure array will has both values
            while (2 > count($value)) {
                $value[] = null;
            }
        }

        // add aliases
        $value['zip']   = $value[0];
        $value['city']  = $value[1];

        if (array_key_exists($key, $value)) {
            return $value[$key];
        }

        return $value;
    }
}

My_View_Helper_ZipAndTheCity.php

<?php

/** Zend_View_Helper_FormElement */
require_once 'Zend/View/Helper/FormElement.php';

class My_View_Helper_ZipAndTheCity extends Zend_View_Helper_FormElement
{
    public function zipAndTheCity($name, $value = array(), $attribs = null)
    {
        $info = $this->_getInfo($name, $value, $attribs);
        extract($info);

        if (!is_array($value)) {
            $value = array(null, null);
        } else {
            // make sure array will has both values
            while (2 > count($value)) {
                $value[] = null;
            }
        }

        // build the element
        $disabled = '';
        if ($disable) {
            // disabled
            $disabled = ' disabled="disabled"';
        }

        // XHTML or HTML end tag?
        $endTag = ' />';
        if (($this->view instanceof Zend_View_Abstract) && !$this->view->doctype()->isXhtml()) {
            $endTag= '>';
        }

        $xhtml  = '<input type="text"'
                . ' name="' . $this->view->escape($name) . '"'
                . ' id="' . $this->view->escape($id . '-zip') . '"'
                . ' value="' . $this->view->escape($value[0]) . '"'
                . $disabled
                . $this->_htmlAttribs($attribs)
                . $endTag
                . '<input type="text"'
                . ' name="' . $this->view->escape($name) . '"'
                . ' id="' . $this->view->escape($id . '-city') . '"'
                . ' value="' . $this->view->escape($value[1]) . '"'
                . $disabled
                . $this->_htmlAttribs($attribs)
                . $endTag
                . '</span>';

        return $xhtml;

    }
}

Hmm... Never thought gist removes paths in filenames :(( So slashes were replaced with underscores in filenames.