XML Parser

<?php
    $xmlDocument = '
        <?xml version="1.0"?>
            <toys>
                <toy code="10001">
                    <name>Ben 10 Watch</name>
                    <type>Battery Toys</type>
                </toy>
                <toy code="10002">
                    <name>Angry Birds Gun</name>
                    <type>Mechanical Toys</type>
                </toy>
            </toys>';

    $line_number = 0;

    function onStart($parser,$name,$attributes) {
        global $line_number;
        
        if($line_number != xml_get_current_line_number($parser)) {
            $line_number = xml_get_current_line_number($parser) . ": ";
            $output = "<br/>" . $line_number . " \t<" . $name . ">";
        } else {
            $output = "<" . $name . ">";
        }
        
        echo $output;	
    }

    function onEnd($parser,$name) {
        global $line_number;
        
        if($line_number != xml_get_current_line_number($parser)) {
            $line_number = xml_get_current_line_number($parser) . ": ";
            $output = "<br/>".$line_number . " \t</" . $name . ">";
        } else {
            $output = "</" . $name . ">";
        }
        
        echo $output;	
    }

    $parser = xml_parser_create();
    xml_set_element_handler($parser, 'onStart', 'onEnd');

    if (!xml_parse($parser, $xmlDocument, true)) {
        echo "<br/>Parse Error";
    } else {
        echo "<br/>Parsing is done.";
    }
?>