PHP XML转数组函数

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/**

* 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');

查询关键字

XML 数组


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