php操作xml文件（一）

example.xml文件：

<?php$xml = simplexml_load_file('example.xml');//创建SimpleXML对象print_r($xml);//输出XML?>  

<?xml version='1.0'?><departs><depart><name>production support</name><employees><employee><serial_no>100001</serial_no><name>Simon</name><age>24</age><birthday>1982-11-06</birthday><salary>5000.00</salary><bonus>1000.00</bonus></employee><employee><serial_no>100002</serial_no><name>Elaine</name><age>24</age><birthday>1982-01-01</birthday><salary>6000.00</salary><bonus>2000.00</bonus></employee></employees></depart><depart><name>testing center</name><employees><employee><serial_no>110001</serial_no><name>Helen</name><age>23</age><birthday>1983-07-21</birthday><salary>5000.00</salary><bonus>1000.00</bonus></employee></employees></depart></departs>

<?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?>