php操作xml

<?php
$xml=file_get_contents("c.xml");
$simple=new SimpleXMLElement($xml);
//var_dump($simple);
//1查询
echo "<table border='1'>";
foreach ($simple->book as $book)
{$attr=$book->attributes();//获取节点属性echo "<tr>";echo "<td>".$book->name."</td>";echo "<td>".$book->price."</td>";echo "<td>".$attr['type']."</td>";echo "</tr>";
}
echo "</table>";//2添加
$book=$simple->addChild('book');
$book->addChild('name',"你说是什么");
$book->addChild('price',"111");
$book->addAttribute('type',"添加语言");
$simple->saveXML("c.xml");//3替换foreach ($simple->book as $book)
{$book->name.="出版设";
}
//可以直接改
//$simple->book[2]->name="i";
$simple->saveXML("c.xml");//4删除
for ($i=count($simple->book)-1;$i>=0;$i--)
{$currentbook=$simple->book[$i];$attr=$currentbook->attributes();if($attr['type']=='添加语言'){unset($simple->book[$i]);}
}
$simple->saveXML("c.xml");?>

xml

<?xml version="1.0" encoding="utf-8"?>
<books>
<book type="动态语言">
<name>中文版</name>
<price>21</price>
</book>
<book type="不是语言">
<name>中文版</name>
<price>21</price>
</book>
<book type="就态语言">
<name>中文版</name>
<price>21</price>
</book>
<book type="动态语言">
<name>中文版</name>
<price>21</price>
</book>
</books>