PHP與SimpleXml使用CRUD

<?php
// 建立SimpleXmlElement
$config = new SimpleXmlElement('');
$config->setting1 = 'setting1 value';         
$config->saveXML('config.xml');               

// 讀取SimpleXmlElement
$config = new SimpleXmlElement('config.xml');
echo $config->setting1;
echo $config->asXml();

// 更新SimpleXmlElement
$config->setting1 = 'new value';
$config->setting2 = 'setting2 value';
echo $config->asXml();

// 刪除SimpleXmlElement
unset($config->setting1);
$config->setting2 = NULL;
echo $config->asXML();
unlink('config.xml');

?>