protected function getLiteralValue($element)
    {
        $value = $element->getValue();
        $trimmed_value = trim($value);

        $preserve_whitespace = $element->getAttributeValue('space', 'default') === 'preserve';
        $literalize_value = self::literalize($element->getAttributeValue('literalize')) !== false;

        if ($literalize_value) {
            if ($preserve_whitespace && ($trimmed_value === '' || $value !== $trimmed_value)) {
                $value = $value;
            } else {
                $value = self::literalize($trimmed_value);
            }
        } elseif (!$preserve_whitespace) {
            $value = $trimmed_value;
            if ($value === '') {
                $value = null;
            }
        }

        return $value;
    }
protected function getLiteralValue($element)
    {
        $value = $element->getValue();
        $trimmed_value = trim($value);

        $preserve_whitespace = $element->getAttributeValue('space', 'default') === 'preserve';
        $literalize_value = self::literalize($element->getAttributeValue('literalize')) !== false;

        if ($literalize_value) {
            if ($preserve_whitespace && ($trimmed_value === '' || $value !== $trimmed_value)) {
                $value = $value;
            } else {
                $value = self::literalize($trimmed_value);
            }
        } elseif (!$preserve_whitespace) {
            $value = $trimmed_value;
            if ($value === '') {
                $value = null;
            }
        }

        return $value;
    }
protected function getLiteralValue ( $ element ) { $ value = $ element -> getValue ( ) ; $ trimmed_value = trim ( $ value ) ; $ preserve_whitespace = $ element -> getAttributeValue ( 'space' , 'default' ) === 'preserve' ; $ literalize_value = self :: literalize ( $ element -> getAttributeValue ( 'literalize' ) ) !== false ; if ( $ literalize_value ) { if ( $ preserve_whitespace && ( $ trimmed_value === '' || $ value !== $ trimmed_value ) ) { $ value = $ value ; } else { $ value = self :: literalize ( $ trimmed_value ) ; } } elseif ( ! $ preserve_whitespace ) { $ value = $ trimmed_value ; if ( $ value === '' ) { $ value = null ; } } return $ value ; }
Depending on the values of the 'literalize' and 'space' attributes of the element
the transformed or literal value of the value is returned

@param \DOMNode $element element to get a value for

@return mixed literalized and/or whitespace preserved value or null if value is empty
Depending on the values of the literalize and space attributes of the element the transformed or literal value of the value is returned