<?php

/**
 * Copyright (C) 2009 Wskm Inc.All rights reserved.  
 * [WskmPHP] www.wskmphp.com 
 * $Id: xml.php 16 2010-07-11 14:06:18Z ws99 $ 
 */

!defined('IN_WSKM') && exit('Access Denied');

class wskm_xml
{
	function xml2array($contents, $get_attributes=1, $priority = 'tag') {
		if(!$contents) return array();

		if(!function_exists('xml_parser_create')) {
			//print "'xml_parser_create()' function not found!";
			return array();
		}
	

		//Get the XML parser of PHP - PHP must have this module for the parser to work
		$parser = xml_parser_create('');
		xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "ISO-8859-1"); # http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss
		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...

		//Initializations
		$xml_array = array();
		$parents = array();
		$opened_tags = array();
		$arr = array();

		$current = &$xml_array; //Refference

		//Go through the tags.
		$repeated_tag_index = array();//Multiple tags with same name will be turned into an array
		foreach($xml_values as $data) {
			unset($attributes,$value);//Remove existing values, or there will be trouble

			//This command will extract these variables into the foreach scope
			// tag(string), type(string), level(int), attributes(array).
			extract($data);//We could use the array by itself, but this cooler.

			$result = array();
			$attributes_data = array();

			if(isset($value)) {
				if($priority == 'tag') $result = $value;
				else $result['value'] = $value; //Put the value in a assoc array if we are in the 'Attribute' mode
			}

			//Set the attributes too.
			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'
				}
			}

			//See tag status and do the needed.
			if($type == "open") {//The starting of the tag '<tag>'
				$parent[$level-1] = &$current;
				if(!is_array($current) or (!in_array($tag, array_keys($current)))) { //Insert New tag
					$current[$tag] = $result;
					if($attributes_data) $current[$tag. '_attr'] = $attributes_data;
					$repeated_tag_index[$tag.'_'.$level] = 1;

					$current = &$current[$tag];

				} else { //There was another element with the same tag name

					if(isset($current[$tag][0])) {//If there is a 0th element it is already an array
						$current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;
						$repeated_tag_index[$tag.'_'.$level]++;
					} else {//This section will make the value an array if multiple tags with the same name appear together
						$current[$tag] = array($current[$tag],$result);//This will combine the existing item and the new item together to make an array
						$repeated_tag_index[$tag.'_'.$level] = 2;

						if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well
							$current[$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($type == "complete") { //Tags that ends in 1 line '<tag />'
				//See if the key is already taken.
				if(!isset($current[$tag])) { //New Key
					$current[$tag] = $result;
					$repeated_tag_index[$tag.'_'.$level] = 1;
					if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data;

				} else { //If taken, put all things inside a list(array)
					if(isset($current[$tag][0]) and is_array($current[$tag])) {//If it is already an array...

						// ...push the new element into that array.
						$current[$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 { //If it is not an array...
						$current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value
						$repeated_tag_index[$tag.'_'.$level] = 1;
						if($priority == 'tag' and $get_attributes) {
							if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well

								$current[$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') { //End of tag '</tag>'
				$current = &$parent[$level-1];
			}
		}

		return($xml_array);
	}


}

?>
