[PHP] Parsing XML the Sequel :)

[Steve Haemelinck]

The page I want to parse is:

http://213.224.136.110:8080/test.xml

And this is my code:

<?php

//Define Opening Tags of XML
$open_tags = array(
'STORY' => '<nasdaqamex-dot-com>',
'STOCK_NAME' => '<issue-name>',
'LAST_SALE' => '<last-sale-price>',
'PREVIOUS_CLOSE' => '<previous-close-price>',
'NET_CHANGE_PCT' => '<net-change-pct>',
'STOCK_URL' => '<issuer-web-site-url>');

//Define Closing Tags of XML
$close_tags = array(
'STORY' => '</nasdaqamex-dot-com>',
'STOCK_NAME' => '</issue-name>',
'LAST_SALE' => '</last-sale-price>',
'PREVIOUS_CLOSE' => '</previous-close-price>',
'NET_CHANGE_PCT' => '</net-change-pct>',
'STOCK_URL' => '</issuer-web-site-url>');


// handles the attributes for opening tags
// $attrs is a multidimensional array keyed by attribute
// name and having the value of that attribute
function startElement($parser, $name, $attrs=''){
    global $open_tags, $temp, $current_tag;

    $current_tag = $name;
    if ($format = $open_tags[$name]){
        switch($name){
            case 'STORY':
                echo 'New Story: ';
                break;
            default:
                break;
        }
    }
}

// $current_tag lets us know what tag we are currently
// dealing with - we use that later in the characterData
// function.
//
// when we see a </STORY> we know that it is time to
// flush our temp variables and prepare to move onto
// the next one
function endElement($parser, $name, $attrs=''){
    global $close_tags, $temp, $current_tag;

    if ($format = $close_tags[$name]){
        switch($name){
            case 'STORY':
                return_page($temp);
                $temp = '';
                break;
            default:
                break;
        }
    }
}

// this function is passed data between elements
// theu $data would equal 'Title Here'
// in the line <TITLE>Title Here</TITLE>
function characterData($parser, $data){
    global $current_tag, $temp, $catID;

    switch($current_tag){
        case 'STOCK_NAME':
            $temp['stock_name'] = $data;
            $current_tag = '';
            break;
        case 'LAST_SALE':
            $temp['last_sale'] = $data;
            $current_tag = '';
            break;
        default:
            break;
    }
}

function return_page() {
    global $temp;

    echo 'o <A
HREF="'.$temp['stock_name'].'">'.$temp['last_sale'].'</A><BR>';
}

// what are we parsing?
$xml_file = 'test.xml';

// declare the character set - UTF-8 is the default
$type = 'UTF-8';

// create our parser
$xml_parser = xml_parser_create($type);

// set some parser options
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true);
xml_parser_set_option($xml_parser, XML_OPTION_TARGET_ENCODING, 'UTF-8');

// this tells PHP what functions to call when it finds an element
// these funcitons also handle the element's attributes
xml_set_element_handler($xml_parser, 'startElement','endElement');

// this tells PHP what function to use on the character data
xml_set_character_data_handler($xml_parser, 'characterData');

if (!($fp = fopen($xml_file, 'r'))) {
    die("Could not open $xml_file for parsing!\n");
}

// loop through the file and parse baby!
while ($data = fread($fp, 4096)) {
    if (!($data = utf8_encode($data))) {
        echo 'ERROR'."\n";
    }
    if (!xml_parse($xml_parser, $data, feof($fp))) {
        die(sprintf( "XML error: %s at line %d\n\n",
        xml_error_string(xml_get_error_code($xml_parser)),
        xml_get_current_line_number($xml_parser)));
    }
}

xml_parser_free($xml_parser);

//Just to see if it has done something
echo 'yahoo';
?>


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