PHP 读取和编写 XML

什么是 XML?
XML 是一种数据存储格式。它没有定义保存什么数据,也没有定义数据的格式。XML 只是定义了标记和这些标记的属性。格式良好的 XML 标记看起来像这样:


<name>Jack Herrington</name>

DOM读取 XML


<?php

  $doc = new DOMDocument();

  $doc->load( 'books.xml' );

  

  $books = $doc->getElementsByTagName( "book" );

  foreach( $books as $book )

  {

  $authors = $book->getElementsByTagName( "author" );

  $author = $authors->item(0)->nodeValue;

  

  $publishers = $book->getElementsByTagName( "publisher" );

  $publisher = $publishers->item(0)->nodeValue;

  

  $titles = $book->getElementsByTagName( "title" );

  $title = $titles->item(0)->nodeValue;

  

  echo "$title - $author - $publisher\n";

  }

  ?>

用 DOM 编写 XML


<?php

  $books = array();

  $books [] = array(

  'title' => 'PHP Hacks',

  'author' => 'Jack Herrington',

  );

  $doc = new DOMDocument(); //创建dom对象

  $doc->formatOutput = true;

  

  $r = $doc->createElement( "books" );//创建标签

  $doc->appendChild( $r );            //将$r标签,加入到xml格式中。

  

  foreach( $books as $book )

  {

      $b = $doc->createElement( "book" );        //创建标签

      $author = $doc->createElement( "author" );

      $author->appendChild($doc->createTextNode( $book['author'] ));  //给标签添加内容

      $b->appendChild( $author );                //将子标签 加入父标签

      

      

      $r->appendChild( $b );                    //加入父标签中!

      }

      

      echo $doc->saveXML();

  ?>

以上就是这2段读取和编写XML的DOM代码了,小伙伴们了解了没,有什么疑问可以给我留言