PHP XMLWriter startCdata()用法及代码示例

XMLWriter::startCdata()函数是PHP中的内置函数，用于启动CDATA。然后需要使用XMLWriter::endCdata()函数关闭此元素。 CDATA是一个文本块，无法被解析器解析，但是被识别为标记。

用法:

bool XMLWriter::startCdata( 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::startCdata()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('h1'); 
  
// Start the Cdata 
$writer->startCdata(); 
  
// Add value to the Cdata 
$writer->text('value'); 
  
// End the Cdata 
$writer->endCdata(); 
  
// End the element 
$writer->endElement(); 
  
// End the document 
$writer->endDocument(); 
?>

输出：

<?xml version="1.0" encoding="UTF-8"?>
<h1><![CDATA[value]]></h1>

范例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 a element 
$writer->startElement('p'); 
  
// Start the Cdata 
$writer->startCdata(); 
  
// Add value to the Cdata which is not 
// going to be visible on the webpage 
$writer->text('This will be secret text,  
                 not visible in browser'); 
  
// End the Cdata 
$writer->endCdata(); 
  
// Add value to the element 
$writer->text('GeeksforGeeks, portal for 
                       Computer Science.'); 
  
// End the element 
$writer->endElement(); 
  
// End the document 
$writer->endDocument(); 
?>

输出：

<?xml version="1.0" encoding="UTF-8"?>
<p><![CDATA[This will be secret text, not visible in browser]]>
    GeeksforGeeks, portal for Computer Science.
</p>

参考： https://www.php.net/manual/en/function.xmlwriter-start-cdata.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 startCdata() 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。