php操作xml入门之xml基本介绍及xml标签元素,xml标签
本文实例讲述了php操作xml入门之xml基本介绍及xml标签元素。分享给大家供大家参考。具体分析如下:
以xml实例来讲解:
复制代码 代码如下:
一、xml声明:
(1)、xml声明要放在文档的第一行;
(2)、encoding:文档字符编码,如utf-8、gb2312等。
(3)、standalone:值为yes或者no,可有可无,表示文档定义是否独立,即与其它文档是否有关联。默认为no。
二、根元素
包在最外层的
三、xml 元素/标签/节点
如果标签中没有内容,如
四、标签中的空格与换行
标签中出现的空格与换行,xml 文档会将空格与换行当作原始内容来处理。所以,在编程时要特别注意。
五、xml标签的命名规范
(1)区分大小写;
(2)不能以数字或“_”开头;
(3)不能以 xml、XML、Xml等特殊字符开头;
(4)不能包含空格;
(5)不能包含冒号。
希望本文所述对大家的php操作XML程序设计有所帮助。

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