toInteger($value, array $options = array()) can localize
integer values. This function will return a localized string of the given number.
Example 558. Integer value localization
<?php
$locale = new Zend_Locale('de_AT');
$number = Zend_Locale_Format::toInteger(13547.3655,
array('locale' => $locale));
// will return 13.547
print $number;