C:/xampp/htdocs/moodle/mnet/xmlrpc/xmlparser.php

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<?php
class mnet_encxml_parser {
    function mnet_encxml_parser() {
        return $this->initialise();
    }

    function initialise() {
        $this->parser = xml_parser_create();
        xml_set_object($this->parser, $this);

        xml_set_element_handler($this->parser, "start_element", "end_element");
        xml_set_character_data_handler($this->parser, "discard_data");

        $this->tag_number        = 0; // Just a unique ID for each tag
        $this->digest            = '';
        $this->remote_timestamp  = '';
        $this->remote_wwwroot    = '';
        $this->signature         = '';
        $this->data_object       = '';
        $this->key_URI           = '';
        $this->payload_encrypted = false;
        $this->cipher            = array();
        $this->error             = array();
        $this->remoteerror       = null;
        $this->errorstarted      = false;
        return true;
    }

    function parse($data) {
        $p = xml_parse($this->parser, $data);

        if ($p == 0) {
            // Parse failed
            $errcode = xml_get_error_code($this->parser);
            $errstring = xml_error_string($errcode);
            $lineno = xml_get_current_line_number($this->parser);
            if ($lineno !== false) {
                $error = array('lineno' => $lineno);
                $lineno--; // Line numbering starts at 1.
                while ($lineno > 0) {
                    $data = strstr($data, "\n");
                    $lineno--;
                }
                $data .= "\n"; // In case there's only one line (no newline)
                $line = substr($data, 0, strpos($data, "\n"));
                $error['code']   = $errcode;
                $error['string'] = $errstring;
                $error['line']   = $line;
                $this->error[] = $error;
            } else {
                $this->error[] = array('code' => $errcode, 'string' => $errstring);
            }
        }

        if (!empty($this->remoteerror)) {
            return false;
        }

        if (count($this->cipher) > 0) {
            $this->cipher = array_values($this->cipher);
            $this->payload_encrypted = true;
        }

        return (bool)$p;
    }

    function free_resource() {
        $free = xml_parser_free($this->parser);
    }

    function start_element($parser, $name, $attrs) {
        $this->tag_number++;
        $handler = 'discard_data';
        switch(strtoupper($name)) {
            case 'DIGESTVALUE':
                $handler = 'parse_digest';
                break;
            case 'SIGNATUREVALUE':
                $handler = 'parse_signature';
                break;
            case 'OBJECT':
                $handler = 'parse_object';
                break;
            case 'RETRIEVALMETHOD':
                $this->key_URI = $attrs['URI'];
                break;
            case 'TIMESTAMP':
                $handler = 'parse_timestamp';
                break;
            case 'WWWROOT':
                $handler = 'parse_wwwroot';
                break;
            case 'CIPHERVALUE':
                $this->cipher[$this->tag_number] = '';
                $handler = 'parse_cipher';
                break;
            case 'FAULT':
                $handler = 'parse_fault';
            default:
                break;
        }
        xml_set_character_data_handler($this->parser, $handler);
        return true;
    }

    function parse_timestamp($parser, $data) {
        $this->remote_timestamp .= $data;
        return true;
    }

    function parse_cipher($parser, $data) {
        $this->cipher[$this->tag_number] .= $data;
        return true;
    }

    function parse_wwwroot($parser, $data) {
        $this->remote_wwwroot .= $data;
        return true;
    }

    function parse_digest($parser, $data) {
        $this->digest .= $data;
        return true;
    }

    function parse_signature($parser, $data) {
        $this->signature .= $data;
        return true;
    }

    function parse_object($parser, $data) {
        $this->data_object .= $data;
        return true;
    }

    function discard_data($parser, $data) {
        if (!$this->errorstarted) {
            // Not interested
            return true;
        }
        $data = trim($data);
        if (isset($this->errorstarted->faultstringstarted) && !empty($data)) {
            $this->remoteerror .= ', message: ' . $data;
        } else if (isset($this->errorstarted->faultcodestarted)) {
            $this->remoteerror = 'code: ' . $data;
            unset($this->errorstarted->faultcodestarted);
        } else if ($data == 'faultCode') {
            $this->errorstarted->faultcodestarted = true;
        } else if ($data == 'faultString') {
            $this->errorstarted->faultstringstarted = true;
        }
        return true;

    }

    function parse_fault($parser, $data) {
        $this->errorstarted = new StdClass;
        return true;
    }

    function end_element($parser, $name) {
        $ok = xml_set_character_data_handler($this->parser, "discard_data");
        return true;
    }
}