php는 xml을 읽고 쓴다

xml 정보 읽기

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<class>
	<student>
		<name>张三</name>
		<age>23</age>
		<intro>努力学习</intro>
	</student>
	<student>
		<name>李四</name>
		<age>23</age>
		<intro>努力学习</intro>
	</student>
</class>

test.php

<?php
	$xmldoc = new DOMDocument();
	
	$xmldoc->load("test.xml");
	
	$stus = $xmldoc->getElementsByTagName("student");
	
	for($i=0;$i < $stus->length;$i++){
		
		$stu = $stus->item($i);
		echo getNodeVal($stu,"name")."--".getNodeVal($stu,"age")."--".
				getNodeVal($stu,"intro")."<br/>";
	}
	
	function getNodeVal(&$MyNode,$tagName){
		return $MyNode->getElementsByTagName($tagName)->item(0)->nodeValue;
	}
?>

xml 쓰기:

<span style="font-size:18px;"><?php
	$xmldoc = new DOMDocument("1.0","utf-8");
	
	$xmldoc->load("classes2.xml");
	
	//添加一个学生信息
	//创建学生结点
	$root = $xmldoc->getElementsByTagName("class")->item(0);
	$stu_node = $xmldoc->createElement("student");
	
	$stu_node->setAttribute("sex", "男");
	
	//创建名字结点并且挂载到学生结点下
	$stu_node_name=$xmldoc->createElement("name");
	$stu_node_name->nodeValue = "唐唐";
	$stu_node->appendChild($stu_node_name);
	
	$stu_node_age=$xmldoc->createElement("age");
	$stu_node_age->nodeValue = "24";
	$stu_node->appendChild($stu_node_age);
	
	$stu_node_intro=$xmldoc->createElement("intro");
	$stu_node_intro->nodeValue = "我是唐唐,我一直很努力";
	$stu_node->appendChild($stu_node_intro);
	
	//把学生结点挂载到根结点下
	$root->appendChild($stu_node);
	
	$xmldoc->save("new.xml");
?></span>

노드 삭제:

<?php
	$xmldoc = new DOMDocument("1.0","utf-8");
	
	$xmldoc->load("test.xml");
	//删除一个结点
	$root = $xmldoc->getElementsByTagName("class")->item(0);
	
	$stus = $xmldoc->getElementsByTagName("student");
	
	$stu1 = $stus->item(2);
	
	//$root->removeChild($stu1);
	
	$stu1->parentNode->removeChild($stu1);
	
	$xmldoc->save("test.xml");
?>

노드 지점 수정:

<?php
	$xmldoc = new DOMDocument("1.0","utf-8");
	
	$xmldoc->load("test.xml");
	//删除一个结点
	$root = $xmldoc->getElementsByTagName("class")->item(0);
	
	$stus = $xmldoc->getElementsByTagName("student");
	
	$stu1 = $stus->item(0);
	
	$stu1_name = $stu1->getElementsByTagName("name")->item(0);
	$stu1_name->nodeValue = "唐唐改名了";
	
	$xmldoc->save("test.xml");
?>

위 내용은 PHP에서 XML을 읽고 쓰는 방법을 모든 측면에서 소개하고 있으며, PHP 튜토리얼에 관심이 있는 친구들에게 도움이 되기를 바랍니다.