PHP DOMDocument createAttribute()用法及代码示例

DOMDocument::createAttribute()函数是PHP中的内置函数，用于创建类DOMAttr的新实例。

用法:

DOMAttr DOMDocument::createAttribute( string $name )

参数：该函数接受单个参数$name，该参数保存属性的名称。

返回值：成功时此函数返回新的DOMAttr对象，失败时返回FALSE。

以下示例程序旨在说明PHP中的DOMDocument::createAttribute()函数：

程序1:

<?php 
  
// Create a new DOMDocument 
$domDocument = new DOMDocument('1.0', 'iso-8859-1'); 
  
// Use createElement() function to create an element node 
$domElement = $domDocument->createElement('organization', 
                             'A computer science portal'); 
  
// Use createAttribute() function to create an attribute node 
$domAttribute = $domDocument->createAttribute('name'); 
  
// Value of created attribute 
$domAttribute->value = 'GeeksforGeeks'; 
  
// Append element to the document 
$domElement->appendChild($domAttribute); 
  
// Append it to the document itself 
$domDocument->appendChild($domElement); 
  
// Save the document into XML and display it 
echo $domDocument->saveXML(); 
  
?>

输出：

<?xml version="1.0" encoding="iso-8859-1"?>
<organization name="GeeksforGeeks">A computer science portal</organization>

程序2:

<?php 
  
// Create a new DOMDocument 
$domDocument = new DOMDocument('1.0', 'iso-8859-1'); 
  
// Use createElement() function to create an element node 
$domElement = $domDocument->createElement('organization', 
                                         'GeeksforGeeks'); 
  
$domAttribute1 = $domDocument->createAttribute('name'); 
  
// Value for the created attribute 
$domAttribute1->value = 'GeeksforGeeks'; 
  
// Append element to the document 
$domElement->appendChild($domAttribute1); 
  
// Use createAttribute() function to create an attribute node 
$domAttribute2 = $domDocument->createAttribute('address'); 
  
// Value for the created attribute 
$domAttribute2->value = 'Noida'; 
  
// Append element to the document 
$domElement->appendChild($domAttribute2); 
  
// Use createAttribute() function to create an attribute node 
$domAttribute3 = $domDocument->createAttribute('email'); 
  
// Value for the created attribute 
$domAttribute3->value = 'abc@geeksforgeeks.org'; 
  
// Append element to the document 
$domElement->appendChild($domAttribute3); 
  
// Append it to the document itself 
$domDocument->appendChild($domElement); 
  
// Save the document to XML and display it 
echo $domDocument->saveXML(); 
  
?>

输出：

<?xml version="1.0" encoding="iso-8859-1"?>
<organization name="GeeksforGeeks" address="Noida" email="abc@geeksforgeeks.org">
    GeeksforGeeks
</organization>

参考： https://www.php.net/manual/en/domdocument.createattribute.php

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