使用PHPDOM-XML创建和解析XML文件sdyqingdao（翻译）_PHP

  /**

  * Topic:       Create and parse XML files using PHP DOM-XML

  * Source:      http://www.php.net/domxml

  * Reference:   http://www.zugeschaut-und-mitgebaut.de/php/extension.domxml.html

  * Author:      urs@circle.ch, 16-1-2001

  *

  */ 

// 使用PHP DOM-XML创建和解析XML文件



  //创建XML文档对象；以后的处理过程将在此基础上进行

  $doc = new_xmldoc("1.0" ); 



  //创建根节点，并设置一个属性

  $root = $doc->add_root("faq" ); 

  $root->setattr("page", "32" ); 



  //子节点

  $one = $root->new_child("question", ""); 

  //为子节点设置属性

  $one->setattr("number", "1"); 

  //question也创建子节点，并且给它赋值

  $one->new_child("text", "1. Where to get libxml-2.0.0?"); 

  $one->new_child("answer", "You can download the latest

  release of libxml   either as a source archive or

  RPM package from http://www.xmlsoft.org.

  The current version is libxml2-2.2.1." ); 



  $two = $root->new_child("question", "" ); 

  $two->setattr("number", "2"); 

  $two->new_child("text", "2. How to configure PHP4?" ); 

  // 创建一个不直接赋值的节点

  $twoone = $two->new_child("answer", ""); 

  // 然后给它单独赋值

  $twoone->set_content("DIR is the libxml install directory

  (if you just use --with-dom it defaults

  to /usr), I needed to use --with-dom=/usr/local" ); 



  $three = $root->new_child("question", "" ); 

  $three->setattr("number", "7" ); 

  $three->new_child("text", "7. How to use DOM XML function ?" ); 

  $three->new_child("answer", "Read this document source for

  a simple example." ); 



  //输出到Browser

  print("

".htmlspecialchars($doc->dumpmem() )."

" ); 



  // write to file

  //写回到文件

  $fp = fopen("test_dom.xml", "w+" ); 

  fwrite($fp, $doc->dumpmem(), strlen($doc->dumpmem() )); 

  fclose($fp); 



  // ------------------------------------------------------

  //现在使用xpath从XML文档中得到内容

 

  $doc = xmldoc(join("", file("test_dom.xml")) ); 

  $ctx = xpath_new_context($doc ); 



  //所有对象

  $foo = xpath_eval($ctx, "//child::*"); 

  print_r($foo); 

  print("

"); 

  //text node 对象

  $foo = xpath_eval($ctx, "//text"); 

  print_r($foo); 

  print("

"); 

  // 第一个text node对象

  $foo = xpath_eval($ctx, "//text[1]"); 

  print_r($foo); 

  print("

"); 

  // 第二个text node对象

  $foo = xpath_eval($ctx, "//text[2]"); 

  print_r($foo); 

  print("

"); 

  // 第三个answer对象

  $foo = xpath_eval($ctx, "//answer[3]"); 

  print_r($foo); 

  print("

"); 



  //第三个text node的类型，名称和内容

  $foo = xpath_eval($ctx, "//text[3]"); 

  $tmp = $foo->nodeset; 

  print_r($tmp); 

  print("
"); 

  print($tmp[0]->type) . "; "; 

  print($tmp[0]->name) . "; "; 

  print($tmp[0]->content); 



?> 



需要说明，PHP DOM 只能在PHP  PHP4.0.x + linux上运行



PHPDOM类库请到http://www.zend.com/download