如何使用SimpleXml获取特定的内部节点？(How to get the specific inner node with SimpleXml?)

如何使用SimpleXml获取特定的内部节点？(How to get the specific inner node with SimpleXml?)

我的xml结构如下：

<?xml version="1.0" ?> <user> <name> foo </name> <token> jfhsjfhksdjfhsjkfhksjfsdk </token> <connection> <host> localhost </host> <username> root </username> <dbName> Test </dbName> <dbPass> 123456789 </dbPass> </connection> </user> <user> ... same structure... </user>

我制作了这个迭代遍历所有xml节点的代码：

function getConString($node) { $item = file_get_contents($_SERVER['DOCUMENT_ROOT'] . "con"); $nodes = new SimpleXMLElement($item); $result = $nodes[0]; foreach($result as $item => $value) { if($item == "token") { return $value->__toString(); } } }

我想要实现的是当$node等于：

jfhsjfhksdjfhsjkfhksjfsdk

connection节点作为数组返回，我怎么能实现呢？

my xml is structured as follow:

<?xml version="1.0" ?> <user> <name> foo </name> <token> jfhsjfhksdjfhsjkfhksjfsdk </token> <connection> <host> localhost </host> <username> root </username> <dbName> Test </dbName> <dbPass> 123456789 </dbPass> </connection> </user> <user> ... same structure... </user>

I made this code that iterate through all xml node:

function getConString($node) { $item = file_get_contents($_SERVER['DOCUMENT_ROOT'] . "con"); $nodes = new SimpleXMLElement($item); $result = $nodes[0]; foreach($result as $item => $value) { if($item == "token") { return $value->__toString(); } } }

what I'm trying to achieve is that when $node is equal to:

jfhsjfhksdjfhsjkfhksjfsdk

the connection node is returned as array, how I can achieve this?

最满意答案

如果您要解析的XML是您在此处发布的，那么它就是无效的

XML文档必须包含一个根元素，该元素是所有其他元素的父元素：

http://www.w3schools.com/xml/xml_syntax.asp

（你的没有，并且解析这样的字符串失败，出现Exception: String could not be parsed as XML in ... ）。

所以你的XML应该是：

<?xml version="1.0" ?> <users> <user> <name> foo </name> <token> jfhsjfhksdjfhsjkfhksjfsdk </token> <connection> <host> localhost </host> <username> root </username> <dbName> Test </dbName> <dbPass> 123456789 </dbPass> </connection> </user> <user> ... same structure... </user> </users>

而且您不需要遍历集合

// $nodes is SimpleXMLElement $user = $nodes->user[0]; if($user->token) return $user->token->__toString();

If the XML you're trying to parse is what you've posted here, it's invalid since

XML documents must contain one root element that is the parent of all other elements:

http://www.w3schools.com/xml/xml_syntax.asp

(and yours doesn't, and parsing such string fails with Exception: String could not be parsed as XML in ...).

So your XML should be:

<?xml version="1.0" ?> <users> <user> <name> foo </name> <token> jfhsjfhksdjfhsjkfhksjfsdk </token> <connection> <host> localhost </host> <username> root </username> <dbName> Test </dbName> <dbPass> 123456789 </dbPass> </connection> </user> <user> ... same structure... </user> </users>

And you don't need to iterate through the collection

// $nodes is SimpleXMLElement $user = $nodes->user[0]; if($user->token) return $user->token->__toString();