一般学习手册上的哪个类,
学哪个,一般学哪个, 都学有难度,还容易忘记,现在主流用哪个;
回复讨论(解决方案)
首选 DOM（DOMDocument）
他完整的描述了 XML 文档的解析和生成，缺点是占内存较大
其次是 SimpleXML
他要求你对待处理的 XML 文档有清晰的了解，属于 DOMDocument 的简化版
可与 DOMDocument 相互转换
可以都了解一下，看一下手册介绍。常用的应该是DOM , simplexml .
建议：
1.浏览一遍有哪些xml相关函数，函数的功能大概有哪些
2.实际运用的时候看需要什么功能的函数，再去仔细看相关函数
3.不建议专门去学习这些函数，效果是你意想不到的差
如果你现在不做XML解析功能的话，不建议去专门学习。
大致浏览下里面都能做些什么，心里有数就好了。
什么时候要用，再仔细查手册写代码。
首选DOM 和 simplexml .
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