parsing xml file.

[lucilue2003]

I've been reading articles on this. I'm learning how to parse through php.

<?php

if (! ($xmlparser = xml_parser_create()) )
{
die ("Cannot create parser");
}
function startElement($xmlHandle, $current_tag_name, $attrib_of_tag){
echo "Current Tag Name: $current_tag_name<br>" if (is_array($attrib_of_tag))
{
echo "Printing Tag Attributes:<br/>";
while (list($key,$val) = each ($attrib_of_tag))
echo "Attribute: " . $key . " value: " . $val;
}
}
function endElement($xmlHandle, $current_tag_name){
echo "Reach end of XMl File<br>$current_tag_name";
}
function tag_contents($xmlHandle, $data) {
echo "Contents : ".$data."<br />";
}
xml_set_element_handler($xmlparser,"startElement","endElement");
xml_set_character_data_handler($xmlparser, "tag_contents");

$filename = "hotjobs.xml";
if (!($fp = fopen($filename, "r"))) { die("cannot open ".$filename); }
while ($data = fread($fp, 4096)){
$data=eregi_replace(">"."[[:space:]]+"."<","><",$data);
if (!xml_parse($xmlparser, $data, feof($fp))) {
$reason = xml_error_string(xml_get_error_code($xmlparser));
$reason .= xml_get_current_line_number($xmlparser);
die($reason);
}
}
xml_parser_free($xmlparser);
?>

The xml file: http://hotjobs.yahoo.com/rss/0/USA/AZ/-/-/doc

the output of that file results in this:

Current Tag Name: RSS
Printing Tag Attributes:
Attribute: VERSION value: 2.0Current Tag Name: CHANNEL
Printing Tag Attributes:
Current Tag Name: TITLE
Printing Tag Attributes:
Contents : Yahoo! HotJobs: doc, AZ, at any time
Reach end of XMl File
TITLECurrent Tag Name: LINK
Printing Tag Attributes:
Contents : http://hotjobs.yahoo.com/jobs/AZ/All/All-jobs
Reach end of XMl File
LINKCurrent Tag Name: DESCRIPTION
Printing Tag Attributes:
Contents : Top HotJobs results for jobs matching: doc, AZ, at any time
Reach end of XMl File
.... .... ...

Have i don something wrong? Why is it hitting end of file so quickly and so many times...

THANKS.

[Norman_Graham]

Hi Lucilue

The endElement() function identifies the closing tag on each element, not the end of the file. The output is printing "Reach end of XML file ..." for each closing tag, because that's what you've told it to do.

HTH

Norm

[lucilue2003]

LOL 🙂

Yah i just realized that too..

Do you know if there is a way to collect all the items. All the nodes?

$items[][] = array();
$items_count = -1;

function startElement($xmlHandle, $current_tag_name, $attrib_of_tag){
global $items_count;

if ($current_tag_name == "ITEM") $items_count += 1;
}

function tag_contents($xmlHandle, $data) {
global $items[][];
global $items_count;
$items[$items_count][] = $data ;

// echo $data . "<br>";

}

IS this a good way to gather the nodes ?
My goal is to parse three or four xml files and collect the information and then display it...

thanks.

[lucilue2003]

Two things:
1. Why doesn't this compile ? There is an error around $yahoo_items[][]
2. Why doesn't it print ? The code works just fine if i dont use class.

<?php
class xmlToArray
{
$yahoo_items[][] = array();
$yahoo_items_count = -1;

var $xml_resParser;
var $strXmlData;
var $current_tag;

function parse($strInputXML) {

$this->xml_resParser = xml_parser_create ();
xml_set_object($this->xml_resParser,$this);
xml_set_element_handler($this->xml_resParser, "tagOpen", "tagClosed");

xml_set_character_data_handler($this->xml_resParser, "tagData");

       $this->strXmlData = xml_parse($this->xml_resParser,$strInputXML );
       if(!$this->strXmlData) {
           die(sprintf("XML error: %s at line %d",
       xml_error_string(xml_get_error_code($this->xml_resParser)),
       xml_get_current_line_number($this->xml_resParser)));
       }
       xml_parser_free($this->xml_resParser);

}
function tagOpen($parser, $name, $attrs) {

if ($this->current_tag == "ITEM") $this->yahoo_items_count += 1;

}
function tagData($parser, $tagData)
{
if ($this->current_tag == "DESCRIPTION")
{
$this->current_tag = "COMPANY";
$tagData = substr($tagData,9,strlen($tagData));
}

$this->yahoo_items[$this->yahoo_items_count][$this->current_tag] = $tagData ;

}

 function tagClosed($parser, $name) {
      //Do nothing. 

}
function getDataArray(){
return $this->yahoo_items;
}
function getDataArrayCount(){
return $this->yahoo_items_count;
}

}
$data = file_get_contents("http://hotjobs.yahoo.com/rss/0/USA/AZ/-/-/-");
$objXML = new xmlToArray();
$objXML->parse($data);

$data = $objXML->getDataArray();
$data_count = $objXML->getDataArrayCount();

 for ($i=0; $i <$data_count; $i++)
 {
 echo "i:$i<br>";
      while (list($key,$val) = each ($data[$i]))
      {
           echo "Attribute: " . $key . " value: " . $val . "<br>";                   
      }
 echo "<br>";
 }     

?>

[lucilue2003]

Any ideas on the above?

[Norman_Graham]

Hi Lucilue

To the best of my knowledge, $variable[][] is not legitimate PHP syntax. I'm not sure what it is you want to achieve with the double angle brackets. Arrays work like this, as far as I know:

$items = array();
// Code to fill the array up with values
$item_three = $items[2];

Ergo, the double brackets will produce an error, but perhaps this is one of the many features of PHP of which I am not yet aware or have not understood.

Other suggestion: update to PHP5 and use Simple XML, which is a much clearer and easier API.

HTH

Norm

[lucilue2003]

Hey Norman Graham,

thanks for the reply.

the double brackets [][] in programming (java/c++) means a multiDimensional array. I guess maybe the syntax is different.

But thanks.. I'm gonna try to see if i can change my logic around.. Thanks.