PHP - xmlwriter_start_attribute_ns() 函式

定義和用法

XML 是一種標記語言，用於在網路上共享資料，XML 既可供人類閱讀，也可供機器閱讀。XMLWriter 擴充套件內部具有 libxml xmlWriter API，用於編寫/建立 XML 文件的內容。此生成的 XML 文件是非快取的，並且是單向的。

xmlwriter_start_attribute_ns() 函式用於建立名稱空間屬性標籤的起始部分。

語法

xmlwriter_start_attribute_ns($writer, $prefix, $name, $uri);

引數

返回值

此函式返回一個布林值，成功時為 TRUE，失敗時為 FALSE。

PHP 版本

此函式首次引入於 PHP 5 版本，並在所有後續版本中均有效。

示例

以下示例演示了 xmlwriter_start_attribute_ns() 函式的用法：

<?php
   //Creating an XMLWriter
   $writer = new XMLWriter();
   $uri = "result.xml";

   //Opening a writer
   $writer = xmlwriter_open_uri($uri);

   //Starting the document
   xmlwriter_start_document($writer);

   //Starting an element
   xmlwriter_start_element($writer, 'Msg');

   //Setting the attribute 
   xmlwriter_start_attribute_ns($writer, 'ns', 'attr', 'test.uri'); 
   xmlwriter_text($writer, 'test_value'); 
   xmlwriter_end_attribute($writer);

   //Adding text to the element
   xmlwriter_text($writer, 'Welcome to Tutorialspoint');  

   //Ending the element
   xmlwriter_end_element($writer);

   //Ending the document
   xmlwriter_end_document($writer);
?>

這將生成以下 XML 文件：

<?xml version="1.0"?>
<Msg ns:attr="test_value" xmlns:ns="test.uri">Welcome to Tutorialspoint</Msg>

示例

以下是此函式面向物件風格的示例：

<?php
   //Creating an XMLWriter
   $writer = new XMLWriter();

   //Opening a writer
   $uri = "result.xml";
   $writer->openUri($uri);

   //Starting the document
   $writer->startDocument();

   //Starting an element
   $writer->startElement('Msg');

   //Setting the attribute 
   $writer->startAttributeNs('ns', 'attr', 'test.uri'); 
   $writer->text('test_value'); 
   $writer->endAttribute();

   //Adding text to the element
   $writer->text('Welcome to Tutorialspoint');  

   //Ending the element
   $writer->endElement();

   //Ending the document
   $writer->endDocument();
?>

這將生成以下 XML 文件：

<?xml version="1.0"?>
<Msg ns:attr="test_value" xmlns:ns="test.uri">Welcome to Tutorialspoint</Msg>