XMLWriter::startDtdAttlist()函數是PHP中的內置函數,用於啟動DTD AttList。 DTD代表“文檔類型定義”,它定義了XML文檔的結構以及法律元素和屬性。在DTD中,使用ATTLIST聲明來聲明屬性。
用法:
bool XMLWriter::startDtdAttlist( string $name )
參數:該函數接受單個參數$name,該參數保存屬性列表名稱。
返回值:如果成功,此函數將返回TRUE,否則將返回FALSE。
以下示例說明了PHP中的XMLWriter::startDtdAttlist()函數:
範例1:
<?php 
  
// Create a new XMLWriter instance 
$writer = new XMLWriter(); 
   
// Create the output stream as PHP 
$writer->openURI('php://output'); 
   
// Start the document 
$writer->startDocument('1.0', 'UTF-8'); 
  
// Start the Dtd Attlist 
$writer->startDtdAttlist('hello'); 
   
// End the Dtd Attlist 
$writer->endDtdAttlist(); 
   
// End the document 
$writer->endDocument(); 
?>輸出:按Ctrl + U查看XML

範例2:
<?php 
  
// Create a new XMLWriter instance 
$writer = new XMLWriter(); 
   
// Create the output stream as PHP 
$writer->openURI('php://output'); 
   
// Start the document 
$writer->startDocument('1.0', 'UTF-8'); 
  
// Start the Dtd Attlist 
$writer->startDtdAttlist( 
    'This_is_not_visible_in_webpage'); 
   
// End the Dtd Attlist 
$writer->endDtdAttlist(); 
   
// Add text to the document 
$writer->text('GeeksforGeeks'); 
   
// End the document 
$writer->endDocument(); 
?>輸出:
GeeksforGeeks
參考: https://www.php.net/manual/en/function.xmlwriter-start-dtd-attlist.php
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