php读取xml列表程序

时间：2015-01-23 来源：西部数据作者：西部数据

php读了xml很方便的,我们下面用dom与php自带的xml_parser来实例吧,我们先看看wk.xml 文件,其实这里是blogbus的rss文件,代码如下:

<?xml version="1.0" encoding="gb2312"?>

<rss version="2.0">

<channel>

  <title>mikeowen</title>

  <link>http://mikeowen.blogbus.com</link>

  <description><![CDATA[Design]]></description>

  <generator> by blogbus.com </generator>

  <lastBuildDate>Tue, 30 Jan 2007 13:46:52 +0800</lastBuildDate>

  <image>

         <url>http://public.blogbus.com/images/head.gif</url>

         <title>mikeowen</title>

         <link>http://mikeowen.blogbus.com</link>

        </image>

<item>

   <title>vanke</title>

   <description>tff</description>

   <link>http://mikeowen.blogbus.com/logs/28560579.html</link>

   <author>mikeowen</author>

   <pubDate>Fri, 05 Sep 2008 12:41:22 +0800</pubDate>

  </item>

  <item>

   <title>something3</title>

   <description>eee</description>

   <link>http://mikeowen.blogbus.com/logs/23972142.html</link>

   <author>mikeowen</author>

   <pubDate>Wed, 02 Jul 2008 12:26:40 +0800</pubDate>

  </item>

</channel>

</rss>

这是我一个同事的博客rss文件我取下来作实例了吧,下面我们来看看解析xml的方法用dom来做,实例代码如下:

<?php

  $doc = new DOMDocument();

  $doc->load( 'wk.xml' );



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

  foreach( $books as $book )

  {

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

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



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

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



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

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



  echo "$title - $author - $publishern";

  }

//开源代码phpfensi.com

?>

简单吧,直接读取节点然后再取当前第一个节点的值就行了,好了下面我们再看看一种方法用php自然的,代码如下:

<?php

  $g_books = array();

  $g_elem = null;



  function startElement( $parser, $name, $attrs )

  {

  global $g_books, $g_elem;

  if ( $name == 'item' ) $g_books []= array();

  $g_elem = $name;

  }



  function endElement( $parser, $name )

  {

  global $g_elem;

  $g_elem = null;

  }



  function textData( $parser, $text )

  {

  global $g_books, $g_elem;

  if ( $g_elem == 'link' ||

  $g_elem == 'pubDate' ||

  $g_elem == 'title' )

  {

  $g_books[ count( $g_books ) - 1 ][ $g_elem ] = $text;

  }

  }



  $parser = xml_parser_create();



  xml_set_element_handler( $parser, "startElement", "endElement" );



  xml_set_character_data_handler( $parser, "textData" );



  $f = fopen( 'wk.xml', 'r' );



  while( $data = fread( $f, 4096 ) )

  {

  xml_parse( $parser, $data );

  }



  xml_parser_free( $parser );



  foreach( $g_books as $book )

  {

  echo $book['title']." - ".$book['link']." - ";

  echo $book['pubDate']."n";

  }

  ?>