PHP XMLWriter setIndentString()用法及代碼示例

XMLWriter::setIndentString()函數是PHP中的內置函數，用於設置字符串，該字符串將用於縮進所得xml的每個元素/屬性。

用法:

bool XMLWriter::setIndentString( string $indentString )

參數：此函數接受單個參數$indentString，該參數保存要用作縮進的字符串。

返回值：如果成功，則此函數返回TRUE；如果失敗，則返回FALSE。

以下示例說明了PHP中的XMLWriter::setIndentString()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'); 
  
// Enable the indents 
$writer->setIndent(true); 
  
// Set the indent string 
$writer->setIndentString('--->'); 
  
// Start a element 
$writer->startElement('div'); 
  
// Start a element 
$writer->startElement('div'); 
  
// Add value to the element 
$writer->text('Hello World'); 
  
// End the element 
$writer->endElement(); 
  
// End the element 
$writer->endElement(); 
  
// 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'); 
  
// Enable the indents 
$writer->setIndent(true); 
  
// Set the indent string 
$writer->setIndentString('--->'); 
  
// Start a element 
$writer->startElement('div'); 
  
// Start a element 
$writer->startElement('div'); 
  
// Start a element 
$writer->startElement('div'); 
  
// Add value to the element 
$writer->text('This is a multi-indented text.'); 
  
// End the element 
$writer->endElement(); 
  
// End the element 
$writer->endElement(); 
  
// End the element 
$writer->endElement(); 
  
// End the document 
$writer->endDocument(); 
?>

輸出：

參考： https://www.php.net/manual/en/function.xmlwriter-set-indent-string.php

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