In-depth interpretation of the role of PHP DOMXPath in XML file parsing_PHP Tutorial

Using

Example of how to use PHP DOMXPath:

1. < ?PHP  
2. header("Content-type:text/html; 
   Charset=utf-8");  
3. $url = "http://www.google.com/ig/
   api?weather=shenzhen";  
4. // 加载XML内容  
5. $dom = new DOMDocument();  
6. $dom->load($url);  
7. $xpath = new DOMXPath($dom);  
8. $element = $xpath->query("/xml_api_reply
   /weather/current_conditions")->item(0);  
9. $condition = get_google_xml_data
   ($element, "condition");  
10. $temp_c = get_google_xml_data
    ($element, "temp_c");  
11. echo '天气：', $condition, '< br />';  
12. echo '温度：', $temp_c, '< br />';  
13. function get_google_xml_data
    ($element, $tagname) {  
14. $tags = $element->
    getElementsByTagName($tagname);   
15. // 取得所有的$tagname  
16. if ($items->length > 1) {  
17. return $items;  
18. }  
19. $tag = $tags->item(0);   
20. // 获取第一个以$tagname命名的标签  
21. if ($tag->hasAttributes()) {   
22. // 获取data属性  
23. $attribute = $tag->
    getAttribute("data");
24. return $attribute;
25. }else {
26. return false;
27. ?>
29. Hope that through the above code example, Everyone can fully understand the specific use of PHP DOMXPath. http://www.bkjia.com/PHPjc/446187.html
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Example of using PHP DOMXPath: ?PHP header(Content-type:text/html; Charset = utf - 8); $ url = http://www.google.com/ig/ api?weather=shenzhen; //Load XML content $dom...