PHP动态添加XML中的数据

来源：互联网发布：mac电脑重新安装系统编辑：程序博客网时间：2024/05/29 08:36
一代码
<?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='1.0' encoding='GB2312'?><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$this->save("message.xml");//生成XML文档echo "<script>alert('添加成功');location.href='".$_SERVER['PHP_SELF']."'</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='506' bgcolor='#FFFFCC'><tr>";print"<td width='106' height='22' align='center'>";print"<b>用户名</b>";print"</td><td width='400' align='center'>";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='506' bgcolor='#FFFFCC'><tr>";  print"<td width='106' height='22' align='center'>";  print"$field[1]";  print"</td><td width='400' align='center'>";  print"$field[2]";  print"</td></tr></table>";}  }  public function post_message(){//定义输出表单的函数    print"<table width='506' bgcolor='#FFFFCC'><form method='post' action='?Action=add_message'>";print"<tr><td width='106' height='22'>&nbsp;&nbsp;&nbsp;&nbsp;用户名：</td><td><input type='text' name='user' size=50></td></tr>";print"<tr><td width='106' height='22'>&nbsp;&nbsp;&nbsp;&nbsp;留言信息：</td><td width='400'><textarea name='address' cols='48' rows='5' id='address'></textarea></td></tr>";print"<tr><td width='106' height='30'>&nbsp;&nbsp;<input type='submit' value='添加数据'></td><td align='right'><a href='?Action=show_message'>查看数据</a>&nbsp;&nbsp;&nbsp;&nbsp;</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">&nbsp;&nbsp;<a href="?Action=post_message">添加数据</a>&nbsp;&nbsp;&nbsp;</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['Action'])) $Action=$_GET['Action'];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['user'],$_POST['address']);//当参数值为add_message时执行add_message()函数  break;}  ?></body></html>
二运行结果
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