最后第二句添加有错 应该这样写：
$a=$doc-createElement('a'); //定义一个a标签
$a_text=$doc-createTextNode("0000000000"); //给a标签一个值
$a-appendChild($a_text); //把值加载到a标签
$id=$doc-createAttribute('id'); //定义一个id属性
$id_text=$doc-createTextNode("xxx"); //给id属性一个值
$id-appendChild($id_text); //把值加载到id属性中
$a-appendChild($id); //把id属性加载到a标签中
$php100-appendChild($a); //把a标签加载到php100标签中
将xml转成数组,然后再删除数据中的值,更方便
下面是转换成数组了函数
xml转换成数组
调用方法
*/
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教程 - php must have this module for the parser to work
$parser = xml_parser_create('');
xml_parser_set_option($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],$result);//this will combine the existing item and the new item together to make an array
if(isset($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
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[$tag])) {//if it is already an array...
// ...push the new element into that array.
if($priority == 'tag' and $get_attributes and $attributes_data) {
$current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
} else { //if it is not an array...
$current[$tag] = array($current[$tag],$result); //...make it an array using using the existing value and the new value
if($priority == 'tag' and $get_attributes) {
if($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($xml_array);
#########################################################################################################
class parserxml
{
function parserxml()
function parserxmlbyurl($url)
$fp = @fopen($url,'r');
if (!$fp){
return 1;
@fclose($fp);
if ($xmlstr === false){
return 0;
return $this-getxmltree($xmlstr);
function getxmltree($xmldata)
ini_set ('track_errors', '1');
$xmlreaderror = false;
$parser = xml_parser_create();
xml_parser_set_option ($parser, xml_option_skip_white, 1);
xml_parser_set_option ($parser, xml_option_case_folding, 0);
if (!xml_parse_into_struct ($parser, $xmldata, $vals, $index)) {
$xmlreaderror = true;
if(!$xmlreaderror){
$result = array ();
$i = 0;
if (isset($vals[$i]['attributes'])){
foreach (array_keys ($vals [$i]['attributes']) as $attkey)
$attributes[$attkey] = $vals[$i]['attributes'][$attkey];
$result[$vals [$i]['tag']] = array_merge((array)$attributes, $this-getchildren($vals, $i, 'open'));
ini_set('track_errors', '0');
return $result;
function getchildren ($vals, $i, $type)
if ($type == 'complete') {
if (isset ($vals [$i]['value']))
return ($vals [$i]['value']);
else
return '';
$children = array ();
while ($vals [◆◆$i]['type'] != 'close') {
$type = $vals [$i]['type'];
if (isset ($children [$vals [$i]['tag']])) {
if (is_array ($children [$vals [$i]['tag']])) {
$temp = array_keys ($children [$vals [$i]['tag']]);
if (is_string ($temp [0])) {
$a = $children [$vals [$i]['tag']];
unset ($children [$vals [$i]['tag']]);
$children [$vals [$i]['tag']][0] = $a;
} else {
$children [$vals [$i]['tag']][] = $this-getchildren ($vals, $i, $type);
} else
$children [$vals [$i]['tag']] = $this-getchildren ($vals, $i, $type);
if (isset ($vals [$i]['attributes'])) {
$attributes = array ();
$attributes [$attkey] = $vals [$i]['attributes'][$attkey];
if ($children [$vals [$i]['tag']] == '') {
$children [$vals [$i]['tag']] = $attributes;
elseif (is_array ($children [$vals [$i]['tag']])) {
$index = count ($children [$vals [$i]['tag']]) - 1;
if ($children [$vals [$i]['tag']][$index] == '') {
unset ($children [$vals [$i]['tag']][$index]);
$children [$vals [$i]['tag']][$index] = $attributes;
$children [$vals [$i]['tag']][$index] = array_merge ($children [$vals [$i]['tag']][$index], $attributes);
$value = $children [$vals [$i]['tag']];
$children [$vals [$i]['tag']]['value'] = $value;
$children [$vals [$i]['tag']] = array_merge ($children [$vals [$i]['tag']], $attributes);
return $children;
试编写代码如下：
php
$xml = new DOMDocument();
$xml-load('test.xml');
$data = $xml-documentElement;
$newpic = $data-removeChild($pic);
$first = $data-getElementsByTagName('pic')-item(0);
$newpic-setAttribute('src','0000.pic');
$newpic-setAttribute('tag','jpeg');
$newpic-setAttribute('link','');
$newpic-setAttribute('title','0000');
$newpic-setAttribute('content','0000');
$data-insertBefore($newpic,$first);
$xml-save('test.xml');
改
和
删除
XML
内容
的
原理和
方法
修改
：通过查询内容
原理重新
对
原始内容进行赋值操作,需要通过ID确定位置
：首先确定到跟标签,使用removeChild
找到指定id执行
操作
$doc
=
new
DOMDocument();
$doc-load(
'index.
'
);
$root
-
documentElement;
$books
$doc-getElementsByTagName(
"
①.00"
foreach(
as
$book
){
echo
$book-getAttribute('id')."-";
$book-getElementsByTagName(
"index"
)-item(0)-nodeValue='test
test';
"br";
if($book-getAttribute('id')==1){
$root-removeChild($book);
$doc-save('index.
');
土嘎嘎的粉丝们大家好,PHP操作XML新人为你解答！
$xml?=?simplexml_load_file($xmlsrc);//初始化并获取其根
//看得出来,你的user要插入到根的下一层,那么就不必进行循环索引了,因为根已经获取到了
$user?=?$xml-addChild("user",?"");//在$xml节点下插入名为user的节点,且必须赋值,这里因为没有值,所以就留空,但不能不写.
//然后再在user节点下插入节点,这里已经把user节点赋给$user了
$name?=?$user-addChild("name",?$_POST["name"]);//把接收到的name值添加到user节点下的name节点中,下同
$sex?=?$user-addChild("sex",?$_POST["sex"]);//因为这里的name和sex添加后不再用了,可以不把节点赋值出来,即不须写上$sex=
$hei?=?$user-addChild("height",?$_POST["height"]);
$hei-addAttribute("type",?"cm");//给height节点添加属性
这个SimpleXML我昨天才开始学,感觉挺不错的样子,操作代码直观,可读性强,多用用熟练了就好
XML DOM 是：[1]
用于 XML 的标准对象模型
用于 XML 的标准编程接口
中立于平台和语言
XML DOM 定义了所有 XML 元素的对象和属性,以及访问它们的方法（接口）.
换句话说：XML DOM 是用于获取、更改、添加或删除 XML 元素的标准.
SimpleXML 函数允许您把 XML 转换为对象.
通过普通的属性选择器或数组迭代器,可以处理这个对象,就像处理任何其他对象一样.
其中的一些函数需要最新的 PHP 版本..如果还有不懂的可以上后盾人看看相关的教材,多看几遍不懂的不就少了.希望对你有帮助.