$t = $xml->xpath('//*[data="帮助"]');
print_r($t[0]);
SimpleXMLElement Object
(
[data] => 帮助
[page] => Array
(
[0] => dbcon.php
[1] => help.php
[2] => footer.php
))
print_r($t[0]);
SimpleXMLElement Object
(
[data] => 帮助
[page] => Array
(
[0] => dbcon.php
[1] => help.php
[2] => footer.php
))
中间少了一个节点的名称,加上去就没错了~