Example code for modifying and deleting XML content with PHP-PHP Tutorial-php.cn

Example code for modifying and deleting XML content with PHP

高洛峰

Release： 2023-03-04 16:36:01

Original

1050 people have browsed it

This article mainly introduces the method of modifying and deleting XML content in PHP. Without further ado, let’s look at the example

The schematic diagram is as follows

Example code for modifying and deleting XML content with PHP

Example code

example.xml

<?xml version="1.0" encoding="utf-8"?>
<root>
 <book id="1">
  <title>title1</title>
 </book>
 <book id="2">
  <title>title2</title>
 </book>
 <book id="3">
  <title>title3</title>
 </book>
 <book id="4">
  <title>title4</title>
 </book>
 <book id="5">
  <title>title5</title>
 </book>
</root>

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First traverse the xml document

<?php $doc = new DOMDocument(); $doc->load(&#39;example.xml&#39;); $books = $doc -> getElementsByTagName("book"); //遍历 foreach ($books as $book) { echo $book->getAttribute(&#39;id&#39;)."-"; echo $book->getElementsByTagName("title")->item(0)->nodeValue; echo "<br>"; }

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The running result is:

1-title1 
2-title2 
3-title3 
4-title4 
5-title5

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Modify:

<?php
 
 $doc = new DOMDocument();
 $doc->load(&#39;example.xml&#39;);
 
 $books = $doc -> getElementsByTagName("book");
 //遍历
 foreach ($books as $book) {
  //将id=3的title设置为33333
  if($book->getAttribute(&#39;id&#39;)==3){
   echo $book->getAttribute(&#39;id&#39;)."-";
   echo $book->getElementsByTagName("title")->item(0)->nodeValue="33333";
   echo "<br>";
  }
 }
 //对文件做修改后，一定要记得重新sava一下，才能修改掉原文件
 $doc -> save(&#39;example.xml&#39;);

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After modification:

<?xml version="1.0" encoding="utf-8"?>
<root>
 <book id="1">
  <title>title1</title>
 </book>
 <book id="2">
  <title>title2</title>
 </book>
 <book id="3">
  <title>33333</title>
 </book>
 <book id="4">
  <title>title4</title>
 </book>
 <book id="5">
  <title>title5</title>
 </book>
</root>

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Delete operation:

<?php
 
 $doc = new DOMDocument();
 $doc->load(&#39;example.xml&#39;);
 
 $root = $doc -> documentElement;//根标签
 $books = $doc -> getElementsByTagName("book");
 //遍历
 foreach ($books as $book) {
  //将id=4的删除
  if($book->getAttribute(&#39;id&#39;)==4){
   $root->removeChild($book);
  }
 }
 //对文件做修改后，一定要记得重新sava一下，才能修改掉原文件
 $doc -> save(&#39;example.xml&#39;);

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The result after deletion is:

<?xml version="1.0" encoding="utf-8"?>
<root>
 <book id="1">
  <title>title1</title>
 </book>
 <book id="2">
  <title>title2</title>
 </book>
 <book id="3">
  <title>33333</title>
 </book>
 
 <book id="5">
  <title>title5</title>
 </book>
</root>

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Summary

The above is the entire content of this article. I hope the content of this article will be useful to everyone. It can bring some help to your study or work. If you have any questions, you can leave a message to communicate.

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