Detailed explanation of steps to dynamically add XML data in PHP-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

Detailed explanation of steps to dynamically add XML data in PHP

php中世界最好的语言

May 17, 2018 pm 01:34 PM

php step Detailed explanation

This time I will bring you a detailed explanation of the steps to dynamically add XML data in PHP. What are the precautions for dynamically adding XML data in PHP? . Here is a practical case, let's take a look.

The creation of xml documents has been briefly described before. Here we continue to discuss the dynamic addition of data in xml:

1. Code

<?php
  class Message_XML extends DomDocument{//定义类Message_XML并继承DomDocument类
   private $Root;
   public function construct(){//构造函数
    parent:: construct();
    if(!file_exists("message.xml")){//判断文件是否存在
     $xmlstr="<?xml version=&#39;1.0&#39; encoding=&#39;GB2312&#39;?><message></message>";
     $this->loadXML($xmlstr);
     $this->save("message.xml");//生成XML文档
    }else{
     $this->load("message.xml");//如果存在则载入XML文档
    }
   }
   public function add_message($user,$address){//创建方法
    $Root=$this->documentElement;//定义根节点
    $admin_id=date("Ynjhis");
    $Node_admin_id=$this->createElement("admin_id");//创建节点admin_id
    $text=$this->createTextNode(iconv("GB2312","UTF-8",$admin_id));//创建一个文本节点
    $Node_admin_id->appendChild($text);//将文本节点添加到admin_id节点中
    $Node_user=$this->createElement("user");//创建节点user
    $text=$this->createTextNode(iconv("GB2312","UTF-8",$user));//创建一个文本节点
    $Node_user->appendChild($text);//将文本节点添加到user节点中
    $Node_address=$this->createElement("address");//创建节点address
    $text=$this->createTextNode(iconv("GB2312","UTF-8",$address));//创建一个文本节点
    $Node_address->appendChild($text);//将文本节点添加到address节点中
    $Node_Record=$this->createElement("record");//创建节点record
    $Node_Record->appendChild($Node_admin_id);//将admin_id节点添加到record节点中
    $Node_Record->appendChild($Node_user);//将user节点添加到record节点中
    $Node_Record->appendChild($Node_address);//将address节点添加到record节点中
    $Root->appendChild($Node_Record);//将record节点添加到根节点中
    $this->save("message.xml");//生成XML文档
    echo "<script>alert(&#39;添加成功&#39;);location.href=&#39;".$_SERVER[&#39;PHP_SELF&#39;]."&#39;</script>";
   }
   public function show_message(){//定义输出XML文件中的内容函数
    $Root=$this->documentElement;//定义根节点
    $xpath=new DOMXPath($this);//定义DOMXPath
    $Node_Record=$this->getElementsByTagName("record");//获取节点record的标签
    $Node_Record_length=$Node_Record->length;//获取标签的数量
    print"<table width=&#39;506&#39; bgcolor=&#39;#FFFFCC&#39;><tr>";
    print"<td width=&#39;106&#39; height=&#39;22&#39; align=&#39;center&#39;>";
    print"<b>用户名</b>";
    print"</td><td width=&#39;400&#39; align=&#39;center&#39;>";
    print"<b>留言信息</b></td></tr>";
    for($i=0;$i<$Node_Record->length;$i++){//应用for循环输出查询结果
     $k=0;
     foreach($Node_Record->item($i)->childNodes as $articles){  //通过foreach语句读取返回对象中的数据
      $field[$k]=iconv("UTF-8","GB2312",$articles->textContent);//实现编码格式的转换
      $k++;
     }
     print"<table width=&#39;506&#39; bgcolor=&#39;#FFFFCC&#39;><tr>";
     print"<td width=&#39;106&#39; height=&#39;22&#39; align=&#39;center&#39;>";
     print"$field[1]";
     print"</td><td width=&#39;400&#39; align=&#39;center&#39;>";
     print"$field[2]";
     print"</td></tr></table>";
    }
   }
   public function post_message(){//定义输出表单的函数
    print"<table width=&#39;506&#39; bgcolor=&#39;#FFFFCC&#39;><form method=&#39;post&#39; action=&#39;?Action=add_message&#39;>";
    print"<tr><td width=&#39;106&#39; height=&#39;22&#39;>    用户名：</td><td><input type=&#39;text&#39; name=&#39;user&#39; size=50></td></tr>";
    print"<tr><td width=&#39;106&#39; height=&#39;22&#39;>    留言信息：</td><td width=&#39;400&#39;><textarea name=&#39;address&#39; cols=&#39;48&#39; rows=&#39;5&#39; id=&#39;address&#39;></textarea></td></tr>";
    print"<tr><td width=&#39;106&#39; height=&#39;30&#39;>  <input type=&#39;submit&#39; value=&#39;添加数据&#39;></td><td align=&#39;right&#39;><a href=&#39;?Action=show_message&#39;>查看数据</a>    </td></tr></form></table>";
   }
  }
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>添加XML数据</title>
<style type="text/css">
<!--
body,td,th {
  font-size: 12px;
}
-->
</style></head>
<body>
<table width="506" height="50" border="0" cellpadding="0" cellspacing="0" bgcolor="#33BE6B">
 <tr>
  <td width="506" height="50" valign="bottom" background="title.gif">
   <table width="506">
    <tr>
     <td height="24" align="right" scope="col">  <a href="?Action=post_message" rel="external nofollow" >添加数据</a>   </td></tr></table></td></tr></table>
     <?php
      $HawkXML=new Message_XML;//实例化Message_XML类
      $Action="";//初始化为空值
      if(isset($_GET[&#39;Action&#39;])) $Action=$_GET[&#39;Action&#39;];
      switch($Action){
       case "show_message":
       $HawkXML->show_message();//当参数值为show_message时执行show_message()函数
       break;
       case "post_message":
       $HawkXML->post_message();//当参数值为post_message时执行post_message()函数
       break;
       case "add_message":
       $HawkXML->add_message($_POST[&#39;user&#39;],$_POST[&#39;address&#39;]);//当参数值为add_message时执行add_message()函数
       break;
      }
     ?>
</body>
</html>

Copy after login

2. Operation results

I believe you have mastered the method after reading the case in this article. Please pay attention for more exciting things. Other related articles on php Chinese website!

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Assassin's Creed Shadows: Seashell Riddle Solution

1 months ago By DDD

What's New in Windows 11 KB5054979 & How to Fix Update Issues

3 weeks ago By DDD

Where to find the Crane Control Keycard in Atomfall

1 months ago By DDD

How to fix KB5055523 fails to install in Windows 11?

2 weeks ago By DDD

InZoi: How To Apply To School And University

3 weeks ago By DDD

Hot Tools

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Where is the login entrance for gmail email?

7756

Java Tutorial

1644

CakePHP Tutorial

1399

Laravel Tutorial

1293

PHP Tutorial

1234

Related knowledge

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles