一个简单的程序来CRUD节点和xml文件的节点值 [英] A simple program to CRUD node and node values of xml file

问题描述

我决定将设置保存在xml文件中，因为字段仅接受一个值.

I decided to save setting in xml file since field takes only one value.

我的XML文件就像

<?xml version="1.0" encoding="UTF-8"?>
<setting>
    <setting1>setting1 value</setting1>
    <setting2>setting2 value</setting2> 
    <setting3>setting3 value</setting3> 
    ....
    ....
    ....
</setting>

有人可以建议我一个简单的PHP脚本来读取，编辑，添加和删除节点和节点值吗?

Can anyone suggest me a simple php script to read, edit, add, and delete node and node values?

推荐答案

如果您的XML确实如此简单，则可以使用

If your XML is really that simple, you can use SimpleXML to CRUD it. SimpleXml will parse the XML into a tree structure of SimpleXmlElements. In a nutshell, you use it like this:

// CREATE
$config = new SimpleXmlElement('<settings/>');
$config->setting1 = 'setting1 value';         
$config->saveXML('config.xml');               

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

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

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

有关其他用法示例和 API描述.

在旁注中，如果您确实只有键/值对，则还可以使用 APC 和具有较长ttl的内存缓存.

On a sidenote, if you really just have key/value pairs, you could also use a plain old PHP array to store them or a key/value store like DBA or even APC and memcached with a long ttl.

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