public function getpath($xml, $path, $default, $istext=false, $error='') {
        foreach ($path as $index) {
            if (!isset($xml[$index])) {
                if (!empty($error)) {
                    $this->error($error);
                    return false;
                } else {
                    return $default;
                }
            }

            $xml = $xml[$index];
        }

        if ($istext) {
            if (!is_string($xml)) {
                $this->error(get_string('invalidxml', 'qformat_xml'));
            }
            $xml = trim($xml);
        }

        return $xml;
    }
public function getpath($xml, $path, $default, $istext=false, $error='') {
        foreach ($path as $index) {
            if (!isset($xml[$index])) {
                if (!empty($error)) {
                    $this->error($error);
                    return false;
                } else {
                    return $default;
                }
            }

            $xml = $xml[$index];
        }

        if ($istext) {
            if (!is_string($xml)) {
                $this->error(get_string('invalidxml', 'qformat_xml'));
            }
            $xml = trim($xml);
        }

        return $xml;
    }
public function getpath ( $ xml , $ path , $ default , $ istext = false , $ error = '' ) { foreach ( $ path as $ index ) { if ( ! isset ( $ xml [ $ index ] ) ) { if ( ! empty ( $ error ) ) { $ this -> error ( $ error ) ; return false ; } else { return $ default ; } } $ xml = $ xml [ $ index ] ; } if ( $ istext ) { if ( ! is_string ( $ xml ) ) { $ this -> error ( get_string ( 'invalidxml' , 'qformat_xml' ) ) ; } $ xml = trim ( $ xml ) ; } return $ xml ; }
return the value of a node, given a path to the node
if it doesn't exist return the default value
@param array xml data to read
@param array path path to node expressed as array
@param mixed default
@param bool istext process as text
@param string error if set value must exist, return false and issue message if not
@return mixed value
return the value of a node given a path to the node if it doesn t exist return the default value