Php/docs/simplexmlelement.getdocnamespaces
SimpleXMLElement::getDocNamespaces
(PHP 5 >= 5.1.2, PHP 7)
SimpleXMLElement::getDocNamespaces — Returns namespaces declared in document
说明
public SimpleXMLElement::getDocNamespaces
([ bool $recursive = false
[, bool $from_root = true
]] ) : array
Returns namespaces declared in document
参数
recursive- If specified, returns all namespaces declared in parent and child nodes. Otherwise, returns only namespaces declared in root node.
from_root- Allows you to recursively check namespaces under a child node instead of from the root of the XML doc.
返回值
The getDocNamespaces method returns an array
of namespace names with their associated URIs.
范例
Example #1 Get document namespaces
<?php$xml = <<<XML<?xml version="1.0" standalone="yes"?><people xmlns:p="http://example.org/ns%22> <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%22 xmlns:t="http://example.org/test%22> <p:person t:id="1">John Doe</p:person> <p:person t:id="2" a:addr="123 Street" xmlns:a="http://example.org/addr%22> 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"
}
参见
- SimpleXMLElement::getNamespaces() - Returns namespaces used in document
- SimpleXMLElement::registerXPathNamespace() - Creates a prefix/ns context for the next XPath query
