<?php
/**
 * 本文件说明：         备案数据接口处理函数
 * 本程序作者：         Xiaoni
 * 本程序版本：         v1.0.0812 Alpha
 * 本程序主页:          http://wwww.15so.com
 * 注意事项：           使用免费版本有日查询条数限制。免费版本请保留本站链接
 * 联系作者：           admin@15so.com
 *
 */

/**
* xml2array() will convert the given XML text to an array in the XML structure.
* Link: http://www.bin-co.com/php/scripts/xml2array/
* Arguments : $contents - The XML text
*                 $get_attributes - 1 or 0. If this is 1 the function will get the attributes as well as the tag values - this results in a different array structure in the return value.
*                 $priority - Can be 'tag' or 'attribute'. This will change the way the resulting array sturcture. For 'tag', the tags are given more importance.
* Return: The parsed XML in an array form. Use print_r() to see the resulting array structure.
* Examples: $array =   xml2array(file_get_contents('feed.xml'));
*               $array =   xml2array(file_get_contents('feed.xml', 1, 'attribute'));
*/ 
function xml2array($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, "UTF-8"); # 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);
}
?>