Xml Library

Category:Libraries::Other

The XML library is an XML parser. It currently has limited features, and is more of a helper library.

[b]Updates:[/b]

2006-11-06:

• Allow better recursion, at the cost of increasing depth of all elements
• Add attributes for all non-bottom depth tags

[b]Features:[/b]

• XML file loading
• XML -> array parsing
• Attribute parsing of all non-bottom tags
• written for PHP5 ([b]not[/b] PHP4 compatible)

[b]Example Usage:[/b]

[code]$this->load->library('xml'); if ($this->xml->load('data/forms/login')) { // Relative to APPPATH, ".xml" appended print_r($this->xml->parse()); } [/code]

[b]Library:[/b]

[code]<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

/***

• XML library for CodeIgniter
• author: Woody Gilk
• copyright: (c) 2006
• license: http://creativecommons.org/licenses/by-sa/2.5/

•  file: libraries/Xml.php
  

*/

class Xml { function Xml () { }

private $document; private $filename;

public function load ($file) { /*** * @public * Load an file for parsing */ $bad = array('|//+|', '|../|'); $good = array('/', ''); $file = APPPATH.preg_replace ($bad, $good, $file).'.xml';

if (! file_exists ($file)) {
  return false;
}

$this->document = utf8_encode (file_get_contents ($file));
$this->filename = $file;

return true;

} /* END load */

public function parse () { /*** * @public * Parse an XML document into an array */ $xml = $this->document; if ($xml == '') { return false; }

$doc = new DOMDocument ();
$doc->preserveWhiteSpace = false;
if ($doc->loadXML ($xml)) {
  $array = $this->flatten_node ($doc);
  if (count ($array) > 0) {
    return $array;
  }
}

return false;

} /* END parse */

private function flatten_node ($node) { /*** * @private * Helper function to flatten an XML document into an array */

$array = array();

foreach ($node->childNodes as $child) {
  if ($child->hasChildNodes ()) {
    if ($node->firstChild->nodeName == $node->lastChild->nodeName && $node->childNodes->length > 1) {
      $array[$child->nodeName][] = $this->flatten_node ($child);
    }
    else {
      $array[$child->nodeName][] = $this->flatten_node($child);

      if ($child->hasAttributes ()) {
        $index = count($array[$child->nodeName])-1;
        $attrs =& $array[$child->nodeName][$index]['__attrs'];
        foreach ($child->attributes as $attribute) {
          $attrs[$attribute->name] = $attribute->value;
        }
      }
    }
  }
  else {
    return $child->nodeValue;
  }
}

return $array;

} /* END node_to_array */ }

?>[/code]