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 {
var $parser;
var $name;
var $attr;
var $data = array();
var $stack = array();
var $keys;
var $path;
var $type;
function xx_xml($url='http://www.example.com', $type='url') {
$this->type = $type;
$this->url = $url;
$this->parse();
}
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 ($this->type == 'url') {
if (!($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') {
$lines = explode("\n",$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 . '|'; }
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";
$pageurl = "http://xml.weather.yahoo.com/forecastrss?p=MYXX0008&u=c";
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_URL, $pageurl );
$thecontents = curl_exec ( $ch );
curl_close($ch);
$xx4 = new xx_xml($thecontents,'contents');
$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.
