php 修改、增加xml结点属性的实现代码

<?
$dom=new DOMDocument(‘1.0’);
$dom->load(‘x.xml’);
$em=$dom->getElementsByTagName(’emotions’);
$em=$em->item(0);
$items=$em->getElementsByTagName(‘item’);
foreach($items as $a){
foreach($a->attributes as $b){
if($b->nodeValue==’Birthday’){
$a->setAttribute(‘name’,’nBirthday’);
}
}
}
$t=$dom->createEle来源gaodaimacom搞#代%码网ment(‘item’);
$t->setAttribute(‘name’,’x’);
$t->setAttribute(‘src’,’www.baidu.com’);
$t->setAttribute(‘duration’,’duration’);
$em->appendChild($t);
$dom->save(‘x.xml’);
?>

<?php
//读取xml
 $dom=new DOMDocument(‘1.0’);
$dom->load(‘data.xml’);
$em=$dom->getElementsByTagName(‘videos’);//最外层节点
$em=$em->item(0);
$items=$em->getElementsByTagName(‘video’);//节点
//如果不用读取直接添加的话把下面这一段去掉即可
foreach($items as $a){
foreach($a->attributes as $b){//$b->nodeValue;节点属性的值$b->nodeName;节点属性的名称
 echo $b->nodeName;
 echo “:”;
 echo $b->nodeValue;
 echo “
“;
}
}
//下面是往xml写入一行新的
$t=$dom->createElement(‘video’);//<video
$t->setAttribute(‘title’,’1′);//<video name="data"
$t->setAttribute(‘src’,’2′);//<video name="data" src="2"
$t->setAttribute(‘img’,’1′);//<video name="data" img="1"
$em->appendChild($t);//

 

<?php
$doc = new DOMDocument();
$doc->load(‘data.xml’);

//查找 videos 节点
$root = $doc->getElementsByTagName(‘videos’);

//第一个 videos 节点
$root = $root->item(0);

//查找 videos 节点下的 video 节点
$userid = $root->getElementsByTagName(‘video’);

//遍历所有 video 节点
foreach ($userid as $rootdata)
{
//遍历每一个 video 节点所有属性
foreach ($rootdata->attributes as $attrib)
{
$attribName = $attrib->nodeName;   //nodeName为属性名称
$attribValue = $attrib->nodeValue; //nodeValue为属性内容

//查找属性名称为ip的节点内容
if ($attribName ==’img’)
{
//查找属性内容为ip的节点内容
if ($attribValue ==’1′)
{
//将属性为img，img内容为1的修改为image;
$rootdata->setAttribute(‘img’,’image’);
$doc->save(‘data.xml’);
}
}
}
} 
?>