Simple example sharing of adding data to xml file in php

This article mainly introduces a simple example of adding data to an xml file in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

xml file: stu.xml:

<?xml version="1.0" encoding="utf-8" ?>
<AllData>
<xueshengmen>
<xuesheng>
 <name>张三</name>
 <yuwen>80</yuwen>
 <shuxue>90</shuxue>
 <yingyu>70</yingyu>
</xuesheng>
<xuesheng>
 <name>李四</name>
 <yuwen>60</yuwen>
 <shuxue>90</shuxue>
 <yingyu>75</yingyu>
</xuesheng>
</xueshengmen>
</AllData>

The above file stu.xml provides partial *.

Now you need to add a zongfen attribute to each xuesheng node and its value is equal to the value of yuwen shuxue yingyu

As shown below:

<?xml version="1.0" encoding="utf-8" ?>
<AllData>
<xueshengmen>
<xuesheng>
 <name>张三</name>
 <yuwen>80</yuwen>
 <shuxue>90</shuxue>
 <yingyu>70</yingyu>
 <zongfen>240</zongfen>
</xuesheng>
<xuesheng>
 <name>李四</name>
 <yuwen>60</yuwen>
 <shuxue>90</shuxue>
 <yingyu>75</yingyu>
 <zongfen>2225</zongfen>
</xuesheng>
</xueshengmen>
</AllData>

Use php to implement:

<?php
$doc = new DOMDocument();
$doc->load( ‘stu.xml&#39; );
 $students = $doc->getElementsByTagName( “xuesheng” );
 foreach($students as $stu){
 $yuwen = $stu->getElementsByTagName( “yuwen” )->item(0)->nodeValue;
 $shuxue = $stu->getElementsByTagName( “shuxue” )->item(0)->nodeValue;
 $yingyu = $stu->getElementsByTagName( “yingyu” )->item(0)->nodeValue;
 $zongfen = $stu->getElementsByTagName( “zongfen” )->item(0)->nodeValue;
 if($zongfen){
  echo “节点已经存在了，不再添加!”;
  continue;
 }
 $zongfen = $yuwen+$shuxue+$yingyu;
 $newNode = $doc->createElement(“zongfen”,$zongfen);
 $stu->appendChild($newNode);
 }
 $result = $doc->saveXML(‘stu.xml&#39;);
?>

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