SimpleXMLElement::getDocNamespaces()
(PHP 5 >= 5.1.2, PHP 7)
Returns namespaces declared in document
说明
public SimpleXMLElement::getDocNamespaces([bool $recursive=FALSE
[,bool $from_root=TRUE
]]): array
Returns namespaces declared in document
参数
- $recursive
If specified, returns all namespaces declared in parent and child nodes. Otherwise, returns only namespaces declared in root node.
- $from_root
Allows you to recursively check namespaces under a child node instead of from the root of the XML doc.
返回值
ThegetDocNamespacesmethod returns an array of namespace names with their associated URIs.
范例
Example #1 Get document namespaces
<?php $xml = <<<XML <?xml version="1.0" standalone="yes"?> <people xmlns:p="http://example.org/ns"> <p:person id="1">John Doe</p:person> <p:person id="2">Susie Q. Public</p:person> </people> XML; $sxe = new SimpleXMLElement($xml); $namespaces = $sxe->getDocNamespaces(); var_dump($namespaces); ?>
以上例程会输出:
array(1) { ["p"]=> string(21) "http://example.org/ns" }
Example #2 Working with multiple namespaces
<?php $xml = <<<XML <?xml version="1.0" standalone="yes"?> <people xmlns:p="http://example.org/ns" xmlns:t="http://example.org/test"> <p:person t:id="1">John Doe</p:person> <p:person t:id="2" a:addr="123 Street" xmlns:a="http://example.org/addr"> Susie Q. Public </p:person> </people> XML; $sxe = new SimpleXMLElement($xml); $namespaces = $sxe->getDocNamespaces(TRUE); var_dump($namespaces); ?>
以上例程会输出:
array(3) { ["p"]=> string(21) "http://example.org/ns" ["t"]=> string(23) "http://example.org/test" ["a"]=> string(23) "http://example.org/addr" }
更新日志
版本 | 说明 |
---|---|
5.4.0 | Added$from_rootparameter. |
参见
- SimpleXMLElement::getNamespaces() Returns namespaces used in document
- SimpleXMLElement::registerXPathNamespace() Creates a prefix/ns context for the next XPath query