php 修改、增加xml结点属性的实现代码

php 修改 增加xml结点属性的代码，供大家学习参考。
php修改xml结点属性，增加xml结点属性的代码，有需要的朋友，参考下。

1、xml文件

<?xml version="1.0" encoding="utf-8" ?>
<clientset>
<server url="192.168.0.180" port="1935" />
<rootpath value="" />
<homepath value="http://www.aaa.com" />
<helppath value="help.html" />
<language value="en" />
<theme value="default" />
<visiblemarquee value = "true" />
<visiblewhitepaper value="true" />
<showmemberroomforguest value = "true" />
<emotions enabled="true" column="5" autoplay="false">
<item name="birthday" src="cartoon/movie/birthday.swf" thumb="cartoon/preview/birthday-small.swf" duration="15"/>
<item name="boom" src="cartoon/movie/boom.swf" thumb="cartoon/preview/boom-small.swf" duration="6"/>
<item name="bubble" src="cartoon/movie/bubble.swf" thumb="cartoon/preview/bubble-small.swf" duration="7.5"/>
<item name="cry" src="cartoon/movie/cry.swf" thumb="cartoon/preview/cry-small.swf" duration="5.4"/>
<item name="doggie" src="cartoon/movie/doggie.swf" thumb="cartoon/preview/doggie-small.swf" duration="13"/>
<item name="greeting" src="cartoon/movie/greeting.swf" thumb="cartoon/preview/greeting-small.swf" duration="7.4"/>
<item name="football" src="cartoon/movie/football.swf" thumb="cartoon/preview/football-small.swf" duration="2.2"/>
</emotions >
</clientset>

2、php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->createelement('item');
$t->setattribute('name','x');
$t->setattribute('src','www.baidu.com');
$t->setattribute('duration','duration');
$em->appendchild($t);
$dom->save('x.xml');
?>

php解析xml文档属性并编辑

<?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 "<br/>";
}
}
//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);//<video name="data" img="1"/>
$dom->save('data.xml');
?> 
 

当时的xml文档:
 

<?xml version="1.0"?>
<videos>
 <video img="a" url="1" title="1" nickname="1" tag="1" vid="1" star="1"/>
 <video img="b" url="2" title="2" nickname="2" tag="2" vid="2" star="2"/>
 <video img="c" url="3" title="3" nickname="3" tag="3" vid="3" star="3"/>
 <video title="d" src="2" img="1"/>
</videos>

//下面这一个文件是后改的可以修改xml

<?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');
}
}
}
} 
?>