如下所示：
<?
/**
* 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);
}
?>
函数描述及例子:
$arr = xml2array(file_get_contents("tools.xml"),1,'attribute');
更多php之xml转数组函数的详解。