PHP读xml、写xml（DOM方法） 

  1 <?php
  2 /**
  3  * 读取的xml的格式
  4  * <urlset>
  5  *  <url>
  6  *      <loc>http://www.51buy.com/0.html</loc>
  7  *      <priority>1.0</priority>
  8  *      <lastmod>Wed, 12 Jun 2013 21:37:52 +0800</lastmod>
  9  *      <changefreq>Always</changefreq>
 10  *  </url>
 11  *  <url>
 12  *      <loc>http://www.baidu.com/1.html</loc>
 13  *      <priority>1.0</priority>
 14  *      <lastmod>Tue, 11 Jun 2013 15:39:17 +0800</lastmod>
 15  *      <changefreq>Always</changefreq>
 16  *  </url>
 17  *  <url>
 18  *      <loc>http://www.jd.com/2.html</loc>
 19  *      <priority>1.0</priority>
 20  *      <lastmod>Tue, 11 Jun 2013 01:21:46 +0800</lastmod>
 21  *      <changefreq>Always</changefreq>
 22  *  </url>
 23  * </urlset>
 24  */
 25 //1读取xml
 26 header("Content-type: text/html; charset=utf-8"); 
 27 // 首先要建一个DOMDocument对象 
 28 $xml = new DOMDocument(); 
 29 // 加载Xml文件 
 30 $xml->load("http://www.baidu.com/sitemap.xml"); 
 31 // 获取所有的post标签 
 32 $postDom = $xml->getElementsByTagName("url"); 
 33 // 循环遍历post标签 
 34 $array = array();
 35 foreach($postDom as $post){ 
 36     // 获取Title标签Node 
 37     $title = $post->getElementsByTagName("loc"); 
 38     $url     = $title->item(0)->nodeValue;
 39     //替换数组中某个值为指定字符串（没有需要的此行可以删除）
 40     $url1    = str_replace(array("w.baidu.com",'book.baidu.com','iworld.baidu.com'),"www.baidu.com/nihao",$url);
 41     //priority
 42     $priority= $post->getElementsByTagName("priority")->item(0)->nodeValue;
 43     //lastmod
 44     $lastmod= $post->getElementsByTagName("lastmod")->item(0)->nodeValue;
 45     //changefreq
 46     $changefreq= $post->getElementsByTagName("changefreq")->item(0)->nodeValue;
 47     $article_array = array('loc'=>$url1, 'priority'=>$priority, 'lastmod'=>$lastmod, 'changefreq'=>$changefreq);  
 48     $array[] = $article_array;
 49        
 50 }
 51 //echo "<pre>";
 52 //var_dump($array);
 53 //print_r($array);
 54 //删除XML文件
 55 /*
 56 $file = "2222.html";//此处
 57     if (!unlink($file))
 58       {
 59       echo ("Error deleting $file");
 60       }
 61     else
 62       {
 63       echo ("Deleted $file");
 64       }
 65 */
 66    
 67 /**
 68  * 写xml的数组的形式
 69  * Array
 70 (
 71     [0] => Array
 72         (
 73             [loc] => http://www.51buy.com/0.html
 74             [priority] => 1.0
 75             [lastmod] => Wed, 12 Jun 2013 21:37:52 +0800
 76             [changefreq] => Always
 77         )
 78    
 79     [1] => Array
 80         (
 81             [loc] => http://www.51buy.com/0.html
 82             [priority] => 1.0
 83             [lastmod] => Tue, 11 Jun 2013 15:39:17 +0800
 84             [changefreq] => Always
 85         )
 86    
 87     [2] => Array
 88         (
 89             [loc] => http://www.51buy.com/0.html
 90             [priority] => 1.0
 91             [lastmod] => Tue, 11 Jun 2013 01:21:46 +0800
 92             [changefreq] => Always
 93         )
 94  )
 95  */
 96 //2写xml
 97 $dom = new DOMDocument('1.0', 'UTF-8');
 98 $dom->formatOutput = true;
 99 $rootelement = $dom->createElement("urlset");
100 foreach ($array as $key=>$value){    
101     $article = $dom->createElement("url");
102     //$article = $dom->createElement("article", $key);    
103     $loc = $dom->createElement("loc", $value['loc']);  
104     $priority = $dom->createElement("priority", $value['priority']);
105     $lastmod = $dom->createElement("lastmod", $value['lastmod']);
106     $changefreq = $dom->createElement("changefreq", $value['changefreq']);  
107     $article->appendChild($loc);  
108     $article->appendChild($priority);  
109     $article->appendChild($lastmod);  
110     $article->appendChild($changefreq); 
111     $rootelement->appendChild($article);  
112 }
113 $dom->appendChild($rootelement);
114 $filename = "./test.xml";
115 echo 'XML文件大小' . $dom->save($filename) . '字节';

 

 

posted on 2014-06-10 16:16  文淇的技术日记  阅读(243)  评论(0)    收藏  举报

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