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php Simplexml_Load_file解析xml详细实例

WBOY
Release: 2016-05-25 16:41:47
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xml文档格式如下:

<?xml version="1.0" encoding="utf-8" 
<list> 
    <company>武汉xxx公司</company> 
    <user> 
        <name>张三</name> 
        <age sex="未知">a</age> 
        <height>1</height> 
    </user> 
    <user> 
        <name>李四</name> 
        <age sex="女">b</age> 
        <height>2</height> 
    </user> 
    <user> 
        <name>王五</name> 
        <age sex="男">c</age> 
        <height>3</height> 
    </user> 
    <town parent="0" id="1">台北</town> 
    <town parent="1" id="2">板桥</town> 
    <town parent="0" id="3">桃园</town> 
</list>
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php解析代码:

header("content-type:text/html; charset=utf-8"); //设置编码 
$xml = simplexml_load_file(&#39;a.xml&#39;);  //载入xml文件 $lists和xml文件的根节点是一样的 
echo $xml->company."<br>"; 
echo $xml->town."<br>id:"; 
echo $xml->town[&#39;id&#39;]."<br>parent:"; 
echo $xml->town[&#39;parent&#39;]."<br>"; 
 
echo "<br>循环读取:<br>"; 
foreach($xml->user as $users){     //有多个user,取得的是数组,循环输出 
    echo "-------------------<br>"; 
    echo "姓名:".$users->name."<br>"; 
    echo "编号:".$users->age."<br>"; 
    echo "性别:".$users->age[&#39;sex&#39;]."<br>"; 
    echo "序号:".$users->height."<br>"; 
} 
echo "<br>循环读取:<br>"; 
foreach($xml->town as $towns){     //有多个user,取得的是数组,循环输出 
    echo "-------------------<br>"; 
    echo "id:".$towns[&#39;id&#39;]."<br>"; 
    echo "归属:".$towns[&#39;parent&#39;]."<br>"; 
    echo "地区:".$towns."<br>"; 
}
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定义和用法:

simplexml_load_file() 函数把 xml 文档载入对象中,如果失败,则返回 false.

语法:simplexml_load_file(file,class,options,ns,is_prefix)

参数 描述 

file 必需,规定要使用的 xml 文档.

class 可选,规定新对象的 class.

options 可选,规定附加的 libxml 参数.

ns 可选.

is_prefix 可选.

返回值:返回类 simplexmlelement 的一个对象,该对象的属性包含 xml 文档中的数据,如果失败,则返回 false.


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