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                # PHP getNamespace() 函數 ## 定義和用法 getNamespace() 函數獲取在 XML 文檔中使用的命名空間。 如果成功,該函數返回命名空間(帶有關聯的 URL)的一個數組。如果失敗,則返回 false。 ### 語法 ``` class SimpleXMLElement { string getNamespace(recursive) } ``` | 參數 | 描述 | | --- | --- | | recursive | 可選。規定是否返回父子節點中使用的所有命名空間。默認是 false。 | ## 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 if (file_exists('test.xml')) { $xml = simplexml_load_file('test.xml'); } print_r($xml->getNamespaces()); ?> ``` 輸出類似: ``` Array ( [b] => http://www.w3school.com.cn/example/ ) ```
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