DOMElement::setAttributeNS()

(PHP 5, PHP 7)

Adds new attribute

说明

publicDOMElement::setAttributeNS(string $namespaceURI,string $qualifiedName,string $value): void

Sets an attribute with namespace$namespaceURIand name$nameto the given value. If the attribute does not exist, it will be created.

参数

$namespaceURI

The namespace URI.

$qualifiedName

The qualified name of the attribute, asprefix:tagname.

$value

The value of the attribute.

返回值

没有返回值。

错误／异常

DOM_NO_MODIFICATION_ALLOWED_ERR

Raised if the node is readonly.

DOM_NAMESPACE_ERR

Raised if$qualifiedNameis a malformed qualified name, or if$qualifiedNamehas a prefix and$namespaceURIis NULL.

参见

• DOMElement::hasAttributeNS() Checks to see if attribute exists
• DOMElement::getAttributeNS() Returns value of attribute
• DOMElement::removeAttributeNS() Removes attribute

To add new brand xml namespace use:
<?php
  $element->setAttributeNS(
    'http://www.w3.org/2000/xmlns/', // xmlns namespace URI
    'xmlns:mynamespace',
    'example.com/mynamespace'
  );
?>
'http://www.w3.org/2000/xmlns/' URI is important
to be able to add new namespaces !!!
Later you can use your namespace like:
<?php
  $element->setAttributeNS(
    'example.com/mynamespace',
    'mynamespace:something', 
    'value'
  );
?>