toFloat() can localize floating point values. This function
will return a localized string of the given number.
Example 555. Floating point value localization
<?php
$locale = new Zend_Locale('de_AT');
$number = Zend_Locale_Format::toFloat(13547.3655,
array('precision' => 1,
'locale' => $locale)
);
// will return 13.547,4
print $number;