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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                # PHP registerXPathNamespace() 函數 ## 定義和用法 registerXPathNamespace() 函數為下一次 XPath 查詢創建命名空間語境。 ### 語法 ``` class SimpleXMLElement { string registerXPathNamespace(prefix,ns) } ``` | 參數 | 描述 | | --- | --- | | prefix | 必需。規定命名空間前綴。 | | ns | 必需。規定命名空間 URL。必須匹配 XML 文檔中的命名空間。 | ## 例子 XML 文件: ``` <?xml version="1.0" encoding="ISO-8859-1"?> <note xmlns:b="http://www.w3school.com.cn/example/"> <to>George</to> <from>John</from> <heading>Reminder</heading> <b:body>Don't forget the meeting!</b:body> </note> ``` PHP 代碼: ``` <?php $xml = simplexml_load_file("test.xml"); $xml->registerXPathNamespace("msg", "http://www.w3school.com.cn/example/"); $result = $xml->xpath("msg:body"); foreach ($result as $message) { echo $message; } ?> ``` 輸出類似: ``` Don't forget the meeting! ```
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