xml_parse

    (PHP 4, PHP 5, PHP 7, PHP 8)

    xml_parse — Inicia un intérprete sobre un documento XML

    Descripción

    xml_parse(resource $parser, string $data, bool $is_final = false): int

    xml_parse() analiza un documento XML. Los manejadores para los eventos configurados son llamados tantas veces como sea necesario.

    Parámetros

    parser

    Identificador del recurso del intérprete XML que se va a usar.

    data

    Conjunto de información que se analizará. Un documento puede ser analizado por trozos llamando varias veces con nuevos trozos a xml_parse(), siempre que se establezca el parámetro is_final y sea true cuando el último dato sea analizado.

    is_final

    Si existe y es true, data es el último fragmento de datos enviados en este intérprete.

    Valores devueltos

    Devuelve 1 si el análisis se realiza con éxito o 0 en caso de error.

    Para análisis fallidos, se puede recuperar información del error con xml_get_error_code(), xml_error_string(), xml_get_current_line_number(), xml_get_current_column_number() and xml_get_current_byte_index().

    Nota:

    Los errores de entidades son reportados al final de los datos, solo si is_final existe y es true.

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    User Contributed Notes 2 notes

    up
    21
    neoyahuu at yahoo dot com
    17 years ago
    Instead of passing a URL, we can pass the XML content to this class (either you
    want to use CURL, Socks or fopen to retrieve it first) and instead of using
    array, I'm using separator '|' to identify which data to get (in order to make
    it short to retrieve a complex XML data). Here is my class with built-in fopen
    which you can pass URL or you can pass the content instead :

    p/s : thanks to this great help page.

    <?php

    class xx_xml {

    // XML parser variables
    var $parser;
    var     $name;
    var     $attr;
    var     $data = array();
    var     $stack = array();
    var     $keys;
    var     $path;

    // either you pass url atau contents.
    // Use 'url' or 'contents' for the parameter
    var $type;

    // function with the default parameter value
    function xx_xml($url='http://www.example.com', $type='url') {
    $this->type = $type;
    $this->url = $url;
    $this->parse();
    }

    // parse XML data
    function parse()
    {
    $data = '';
    $this->parser = xml_parser_create();
    xml_set_object($this->parser, $this);
    xml_set_element_handler($this->parser, 'startXML', 'endXML');
    xml_set_character_data_handler($this->parser, 'charXML');

    xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, false);

    if (    $this->type == 'url') {
    // if use type = 'url' now we open the XML with fopen

    if (!($fp = @fopen($this->url, 'rb'))) {
    $this->error("Cannot open {$this->url}");
    }

    while ((    $data = fread($fp, 8192))) {
    if (!    xml_parse($this->parser, $data, feof($fp))) {
    $this->error(sprintf('XML error at line %d column %d',
    xml_get_current_line_number($this->parser),
    xml_get_current_column_number($this->parser)));
    }
    }
    } else if (    $this->type == 'contents') {
    // Now we can pass the contents, maybe if you want
    // to use CURL, SOCK or other method.
    $lines = explode("\n",$this->url);
    foreach (    $lines as $val) {
    if (    trim($val) == '')
    continue;
    $data = $val . "\n";
    if (!    xml_parse($this->parser, $data)) {
    $this->error(sprintf('XML error at line %d column %d',
    xml_get_current_line_number($this->parser),
    xml_get_current_column_number($this->parser)));
    }
    }
    }
    }

    function     startXML($parser, $name, $attr) {
    $this->stack[$name] = array();
    $keys = '';
    $total = count($this->stack)-1;
    $i=0;
    foreach (    $this->stack as $key => $val) {
    if (    count($this->stack) > 1) {
    if (    $total == $i)
    $keys .= $key;
    else
    $keys .= $key . '|'; // The saparator
    }
    else
    $keys .= $key;
    $i++;
    }
    if (    array_key_exists($keys, $this->data)) {
    $this->data[$keys][] = $attr;
    } else
    $this->data[$keys] = $attr;
    $this->keys = $keys;
    }

    function     endXML($parser, $name) {
    end($this->stack);
    if (    key($this->stack) == $name)
    array_pop($this->stack);
    }

    function     charXML($parser, $data) {
    if (    trim($data) != '')
    $this->data[$this->keys]['data'][] = trim(str_replace("\n", '', $data));
    }

    function     error($msg) {
    echo     "<div align=\"center\">
    <font color=\"red\"><b>Error:     $msg</b></font>
    </div>"    ;
    exit();
    }
    }

    ?>

    And example of retrieving XML data:
    p/s: example use to retrieve weather

    <?php
    include_once "xx_xml.class.php";

    // Im using simple curl (the original is in class) to get the contents

    $pageurl = "http://xml.weather.yahoo.com/forecastrss?p=MYXX0008&u=c";
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($ch, CURLOPT_URL, $pageurl );
    $thecontents = curl_exec ( $ch );
    curl_close($ch);

    // We want to pass only a ready XML content instead of URL
    // But if you want to use URL , skip the curl functions above and use this
    // $xx4 = new xx_xml("url here",'url');

    $xx4 = new xx_xml($thecontents,'contents');
    // As you can see, we use saparator '|' instead of long array
    $Code = $xx4->data ['rss|channel|item|yweather:condition']['code'] ;
    $Celcius = $xx4->data ['rss|channel|item|yweather:condition']['temp'] ;
    $Text = $xx4->data ['rss|channel|item|yweather:condition']['text'] ;
    $Cityname = $xx4->data ['rss|channel|yweather:location']['city'] ;

    ?>

    Hope this helps.
    up
    5
    lz_speedy at web dot de
    16 years ago
    Best seen xml2array function ever
    <?php
    function xml2array($url, $get_attributes = 1, $priority = 'tag')
    {
    $contents = "";
    if (!    function_exists('xml_parser_create'))
    {
    return array ();
    }
    $parser = xml_parser_create('');
    if (!(    $fp = @ fopen($url, 'rb')))
    {
    return array ();
    }
    while (!    feof($fp))
    {
    $contents .= fread($fp, 8192);
    }
    fclose($fp);
    xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8");
    xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
    xml_parse_into_struct($parser, trim($contents), $xml_values);
    xml_parser_free($parser);
    if (!    $xml_values)
    return;     //Hmm...
    $xml_array = array ();
    $parents = array ();
    $opened_tags = array ();
    $arr = array ();
    $current = & $xml_array;
    $repeated_tag_index = array ();
    foreach (    $xml_values as $data)
    {
    unset (    $attributes, $value);
    extract($data);
    $result = array ();
    $attributes_data = array ();
    if (isset (    $value))
    {
    if (    $priority == 'tag')
    $result = $value;
    else
    $result['value'] = $value;
    }
    if (isset (    $attributes) and $get_attributes)
    {
    foreach (    $attributes as $attr => $val)
    {
    if (    $priority == 'tag')
    $attributes_data[$attr] = $val;
    else
    $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
    }
    }
    if (    $type == "open")
    {
    $parent[$level -1] = & $current;
    if (!    is_array($current) or (!in_array($tag, array_keys($current))))
    {
    $current[$tag] = $result;
    if (    $attributes_data)
    $current[$tag . '_attr'] = $attributes_data;
    $repeated_tag_index[$tag . '_' . $level] = 1;
    $current = & $current[$tag];
    }
    else
    {
    if (isset (    $current[$tag][0]))
    {
    $current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
    $repeated_tag_index[$tag . '_' . $level]++;
    }
    else
    {
    $current[$tag] = array (
    $current[$tag],
    $result
    );
    $repeated_tag_index[$tag . '_' . $level] = 2;
    if (isset (    $current[$tag . '_attr']))
    {
    $current[$tag]['0_attr'] = $current[$tag . '_attr'];
    unset (    $current[$tag . '_attr']);
    }
    }
    $last_item_index = $repeated_tag_index[$tag . '_' . $level] - 1;
    $current = & $current[$tag][$last_item_index];
    }
    }
    elseif (    $type == "complete")
    {
    if (!isset (    $current[$tag]))
    {
    $current[$tag] = $result;
    $repeated_tag_index[$tag . '_' . $level] = 1;
    if (    $priority == 'tag' and $attributes_data)
    $current[$tag . '_attr'] = $attributes_data;
    }
    else
    {
    if (isset (    $current[$tag][0]) and is_array($current[$tag]))
    {
    $current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
    if (    $priority == 'tag' and $get_attributes and $attributes_data)
    {
    $current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
    }
    $repeated_tag_index[$tag . '_' . $level]++;
    }
    else
    {
    $current[$tag] = array (
    $current[$tag],
    $result
    );
    $repeated_tag_index[$tag . '_' . $level] = 1;
    if (    $priority == 'tag' and $get_attributes)
    {
    if (isset (    $current[$tag . '_attr']))
    {
    $current[$tag]['0_attr'] = $current[$tag . '_attr'];
    unset (    $current[$tag . '_attr']);
    }
    if (    $attributes_data)
    {
    $current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
    }
    }
    $repeated_tag_index[$tag . '_' . $level]++; //0 and 1 index is already taken
    }
    }
    }
    elseif (    $type == 'close')
    {
    $current = & $parent[$level -1];
    }
    }
    return (    $xml_array);
    }
    ?>

    Returns a well formed array like the structure of the xml-document

    <root>
    <child1>
    <child1child1/>
    </child1>
    </root>

    create an array like
    array[root][child1][child1child1]

    lg
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