基于PHP对XML的操作详解

<?php 

    $xml = simplexml_load_file('example.xml');              //创建simplexml对象  
    var_dump($xml);                                                             //输出xml  
?> 

<?php 
    $xml = simplexml_load_file('example.xml');          //读取xml文件  
    foreach($xml->depart as $a)                                    //循环读取xml数据中的每一个depart标签  
    { 
        echo "$a->name <br>";                                       //输出其中的name属性  
    } 
?> 

<?php 
    $xml = simplexml_load_file('example.xml');          //读取xml文件  
    echo $xml->depart->name[0];                                  //输出节点  
?> 

<?php 
    $xml = simplexml_load_file('example.xml'); 
    foreach ($xml->depart->children() as $depart)             //循环读取depart标签下的子标签  
    { 
       var_dump($depart);                                                        //输出标签的xml数据  
    } 
?> 

<?php 
    $xml = simplexml_load_file('example.xml');                      //读取xml文件  
    $result = $xml->xpath('/departs/depart/employees/employee/name');        //定义节点  
    var_dump($result);                                          //输出节点  
?> 

<?php 
    $xml = simplexml_load_file('example.xml');              //读取xml  
    $xml->depart->name[0] = "human resource";         //修改节点  
?> 

<?php 
    $xml = simplexml_load_file('example.xml');              //读取xml数据  
    echo $xml->asxml();                                                     //标准化xml数据  
?> 

<?php 
    $xml = simplexml_load_file('example.xml');              //读取xml数据  
    $newxml = $xml->asxml();                         //标准化xml数据  
    $fp = fopen("newxml.xml", "w");                  //打开要写入xml数据的文件  
    fwrite($fp, $newxml);                                    //写入xml数据  
    fclose($fp);                                                     //关闭文件  
?>