PHP XPath对XML文件查找及修改实现代码

代码如下:

1. <?php
   
2. /*
   
3. <?xml version="1.0" encoding="utf-8"?>
   
4. <article>
   
5. <item>
   
6. <title name="t1">11</title>
   
7. <content>content1</content>
   
8. <pubdate>2009-10-11</pubdate>
   
9. </item>
   
10. <item>
    
11. <title name="t2">title2</title>
    
12. <content>content2</content>
    
13. <pubdate>2009-11-11</pubdate>
    
14. </item>
    
15. </article>
    
16. */
    
17. if(!function_exists('l')) {
    
18. function l() {
    
19. echo '<br/>***********************************<br />';
    
20. }
    
21. }
    
22. if(file_exists('test10_12.xml')) {
    
23. $xml = simplexml_load_file('test10_12.xml');
    
24. 
    
25. //利用xpath方法查找节点位置
    
26. $query = $xml->xpath('//title[@name="t1"]/ancestor::item');
    
27. 
    
28. var_dump($query);
    
29. l();
    
30. 
    
31. //测试在title节点下新增子节点new
    
32. $query[0]->title->addChild('new','new');
    
33. 
    
34. //测试在title节点下新增属性fuck
    
35. $query[0]->title->addAttribute('fuck','fuck you');
    
36. 
    
37. //测试修改content节点值为hello,world
    
38. $query[0]->content = 'hello,world';
    
39. 
    
40. //不解释,你懂的
    
41. $query[0]->asXML("10.xml");
    
42. }
    
43. ?>

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