xml 转换成 array

xmltoarray 写道

<?php

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

class XmlToArray {

function __construct() {

}

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;
}

}

?>