php xml操作

<?xml version="1.0" encoding="UTF-8"?>

<root>

<admins>

<username>admin</username>

<password>xxxxxxxxxxxxxx</password>

</admins>

<admins>

<username>admin</username>

<password>xxxxxxxxxxxxxx</password>

</admins>

</root>

$filex = S_ROOT.'./data/adminconfig.xml';

$xml = simplexml_load_file($filex);

$result = $xml->xpath("//admins[username='".$_SESSION['user']."']");



$result[0]->password = md5($_POST['newpwd']);  //关键在于 $result[0] 这里dump打印出来看结果就很明显了. 因为是xml对象 不能像数组那样直接复制  所有 xml -> tag