PHP XMLWriter startComment()用法及代码示例

XMLWriter::startComment()函数是PHP中的内置函数，用于启动注释。稍后需要使用XMLWriter::endComment()函数关闭此注释。

用法:

bool XMLWriter::startComment( void )

参数：此函数不接受任何参数。

返回值：如果成功，此函数将返回TRUE，否则将返回FALSE。

以下示例说明了PHP中的XMLWriter::startComment()函数：

范例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 a element 
$writer->startElement('div'); 
  
// Start a comment 
$writer->startComment(); 
  
// Add text to the comment 
$writer->text('This is a comment'); 
  
// End the comment 
$writer->endComment(); 
  
// End the element 
$writer->endElement(); 
  
// End the document 
$writer->endDocument(); 
?>

输出：

<?xml version="1.0" encoding="UTF-8"?>
<div><!--This is a comment--></div>

程序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 a element 
$writer->startElement('div'); 
  
// Start a comment 
$writer->startComment(); 
  
// Add text to the comment which will not be visible 
$writer->text('This will not be visible.'); 
  
// End the comment 
$writer->endComment(); 
  
// Add value to the element 
$writer->text('This is the visible text.'); 
  
// End the element 
$writer->endElement(); 
  
// End the document 
$writer->endDocument(); 
?>

输出：

<?xml version="1.0" encoding="UTF-8"?>
<div><!--This will not be visible.-->
This is the visible text.</div>

参考： https://www.php.net/manual/en/function.xmlwriter-start-comment.php

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注：本文由纯净天空筛选整理自gurrrung大神的英文原创作品 PHP | XMLWriter startComment() Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。