PHP操作XML的各种方法

szs

<?php
class mdl_xml{
function xml2arrayValues($contents, $get_attributes=1) {
if(!$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('UTF-8');
xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, 0 );
xml_parser_set_option( $parser, XML_OPTION_SKIP_WHITE, 0 );
xml_parse_into_struct( $parser, $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;
//Go through the tags.
foreach($xml_values as $data) {
unset($attributes,$value);//Remove existing values, or there will be trouble
extract($data);//We could use the array by itself, but this cooler.
$result = '';
if($get_attributes) {//The second argument of the function decides this.
$result = array();
if(isset($value)) $result['value'] = trim($value);
//Set the attributes too.
if(isset($attributes)) {
foreach($attributes as $attr => $val) {
if($get_attributes == 1) $result['attr'][$attr] = trim($val); //Set all the attributes in a array called 'attr'
/**  :TODO: should we change the key name to '_attr'? Someone may use the tagname 'attr'. Same goes for 'value' too */
}
}
} elseif(isset($value)) {
$result = trim($value);
}
//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;
$current = &$current[$tag];
} else { //There was another element with the same tag name
if(isset($current[$tag][0])) {
array_push($current[$tag], $result);
} else {
$current[$tag] = array($current[$tag],$result);
}
$last = count($current[$tag]) - 1;
$current = &$current[$tag][$last];
}
} 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] = $result;
} else { //If taken, put all things inside a list(array)
if((is_array($current[$tag]) and $get_attributes == 0)//If it is already an array...
or (isset($current[$tag][0]) and is_array($current[$tag][0]) and $get_attributes == 1)) {
array_push($current[$tag],$result); // ...push the new element into that array.
} else { //If it is not an array...
$current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value
}
}
} elseif($type == 'close') { //End of tag '</tag>'
$current = &$parent[$level-1];
}
}
return($xml_array);
}
function xml2array($contents, $output_tag=null) {
if(!$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('UTF-8');
xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, 0 );
xml_parser_set_option( $parser, XML_OPTION_SKIP_WHITE, 0 );
xml_parse_into_struct( $parser, $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;
$number=0;
//Go through the tags.
foreach($xml_values as $data) {
unset($attributes,$value);//Remove existing values, or there will be trouble
extract($data);//We could use the array by itself, but this cooler.
$result = '';
if($tag=='item') {//The second argument of the function decides this.
if(!is_null($value)) $result = trim($value);
$tag=$number;
$number++;
} elseif(!is_null($value)) {
$result = trim($value);
}
//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;
$current = &$current[$tag];
} else { //There was another element with the same tag name
if(isset($current[$tag][0])) {
array_push($current[$tag], $result);
} else {
$current[$tag] = array($current[$tag],$result);
}
$last = count($current[$tag]) - 1;
$current = &$current[$tag][$last];
}
} 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] = $result;
} else { //If taken, put all things inside a list(array)
if((is_array($current[$tag]) and $get_attributes == 0)//If it is already an array...
or (isset($current[$tag][0]) and is_array($current[$tag][0]) and $get_attributes == 1)) {
array_push($current[$tag],$result); // ...push the new element into that array.
} else { //If it is not an array...
$current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value
}
}
} elseif($type == 'close') { //End of tag '</tag>'
$current = &$parent[$level-1];
}
}
if($tag=='item'){
$number=0;
}
if($output_tag){
return($xml_array[$output_tag]);
}else{
return($xml_array);
}
}

function getPath($xml,$tagName,$attr=null){
$parser = xml_parser_create('UTF-8');
xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, 0 );
xml_parser_set_option( $parser, XML_OPTION_SKIP_WHITE, 0 );
xml_parse_into_struct( $parser, $xml, $xml_values );
xml_parser_free( $parser );
$node = null;
foreach($xml_values as $k=>$v){
if($tagName==$v['attributes']['type']){
if($attr){
if(count(array_diff_assoc($attr,$v['attributes'])) == 0){
$node = &$xml_values[$k];
break;
}
}else{
$node = &$xml_values[$k];
break;
}
}
}
$path=array();
if($node){
for($level = $node['level'];$k>-1;$k--){
if($xml_values[$k]['level'] == $level){
array_unshift($path,$xml_values[$k]);
$level--;
}
}
//      unset($xml_values);
return $path;
}else{
//      unset($xml_values);
return false;
}
}
function array2xml($data,$root='root'){
$xml='<'.$root.'>';
$this->_array2xml($data,$xml);
$xml.='</'.$root.'>';
return $xml;
}
function _array2xml(&$data,&$xml){
if(is_array($data)){
foreach($data as $k=>$v){
if(is_numeric($k)){
$xml.='<item>';
$xml.=$this->_array2xml($v,$xml);
$xml.='</item>';
}else{
$xml.='<'.$k.'>';
$xml.=$this->_array2xml($v,$xml);
$xml.='</'.$k.'>';
}
}
}elseif(is_numeric($data)){
$xml.=$data;
}elseif(is_string($data)){
$xml.='<![CDATA['.$data.']]>';
}
}
function isnumericArray($array)
{
if(count($array)>0 && !empty($array[0]))
return true;
else
return false;
}
function array_xml($keytag, $array)
{   
$attributes = "";
$tagcontent = "";
if(is_array($array))
{
foreach($array as $key=>$value)
{
if(in_array($key, $member_element[$keytag]) && !is_array($value)) // this is attribute
{
$attributes .= "$key=\"$value\" ";
}
else if(is_array($value))
{
if($this->isnumericArray($value)){
for($i=0; $i<count($value); $i++)
{
$tagcontent .= $this->array_xml($key, $value[$i]);
}
}else
$tagcontent .= $this->array_xml($key, $value);
}else if($key == "value")
$tagcontent .= $value;
else
$tagcontent .= "<{$key}>$value</{$key}>";
}
}
return "<$keytag $attributes>$tagcontent</$keytag>";
}
function attribute_xml($array,$keytag,$element )
{   
$attributes = "";
$tagcontent = "";        
if(is_array($array)){
foreach($array as $key=>$value){
if(in_array($key, $element[$keytag]) && !is_array($value)){ // this is attribute
$attributes .= "$key=\"$value\" ";
}else if(is_array($value)){
if($this->isnumericArray($value)){
for($i=0; $i<count($value); $i++){
$tagcontent .= $this->attribute_xml($value[$i],$key,$element);
}
}else
$tagcontent .= $this->attribute_xml($value,$key, $element);
}else if($key == "value")
$tagcontent .= $value;
else
$tagcontent .= "<{$key}>$value</{$key}>";
}
}
return "<$keytag $attributes>$tagcontent</$keytag>";
}
function orderarray_xml($keytag, $array)
{   
$attributes = "";
$tagcontent = "";
if(is_array($array)){
foreach($array as $key=>$value){
if(in_array($key, $order_element[$keytag]) && !is_array($value)){ // this is attribute
$attributes .= "$key=\"$value\" ";
}else if(is_array($value)){
if($this->isnumericArray($value)){
for($i=0; $i<count($value); $i++){
$tagcontent .= $this->orderarray_xml($key, $value[$i]);
}
}else
$tagcontent .= $this->orderarray_xml($key, $value);
}else if($key == "value")
$tagcontent .= $value;
else
$tagcontent .= "<{$key}>$value</{$key}>";
}
}
return "<$keytag $attributes>$tagcontent</$keytag>";
}
function goodsarray_xml($keytag, $array)
{   
$attributes = "";
$tagcontent = "";
if(is_array($array)){
foreach($array as $key=>$value){
if(in_array($key, $element[$keytag]) && !is_array($value)){ // this is attribute
$attributes .= "$key=\"$value\" ";
}else if(is_array($value)){
if($this->isnumericArray($value)){
for($i=0; $i<count($value); $i++){
$tagcontent .= $this->goodsarray_xml($key, $value[$i]);
}
}else
$tagcontent .= $this->goodsarray_xml($key, $value);
}else if($key == "value")
$tagcontent .= $value;
else
$tagcontent .= "<{$key}>$value</{$key}>";
}
}
return "<$keytag $attributes>$tagcontent</$keytag>";
}
}
?>