src/Zend/Filter/Boolean.php
protected function _getLocalizedQuestion($value, $yes, $locale)
    {
        if ($yes == true) {
            $question = 'yes';
            $return   = true;
        } else {
            $question = 'no';
            $return   = false;
        }
        $str = Zend_Locale::getTranslation($question, 'question', $locale);
        $str = explode(':', $str);
        if (!empty($str)) {
            foreach($str as $no) {
                if (($no == $value) || (strtolower($no) == strtolower($value))) {
                    return $return;
                }
            }
        }
    }
protected function _getLocalizedQuestion($value, $yes, $locale)
    {
        if ($yes == true) {
            $question = 'yes';
            $return   = true;
        } else {
            $question = 'no';
            $return   = false;
        }
        $str = Zend_Locale::getTranslation($question, 'question', $locale);
        $str = explode(':', $str);
        if (!empty($str)) {
            foreach($str as $no) {
                if (($no == $value) || (strtolower($no) == strtolower($value))) {
                    return $return;
                }
            }
        }
    }
Determine the value of a localized string, and compare it to a given value

@param  string $value
@param  boolean $yes
@param  array $locale
@return boolean