DOMDocument::createAttributeNS

(PHP 5, PHP 7, PHP 8)

DOMDocument::createAttributeNS — Create new attribute node with an associated namespace

public DOMDocument::createAttributeNS(?string $namespace, string $qualifiedName): DOMAttr|false

This function creates a new instance of class DOMAttr. 此节点出现在文档中，除非是用诸如 DOMNode->appendChild() 等函数来将其插入。

namespace: The URI of the namespace.
qualifiedName: The tag name and prefix of the attribute, as prefix:tagname.

The new DOMAttr or false if an error occurred.

DOM_INVALID_CHARACTER_ERR: Raised if qualifiedName contains an invalid character.
DOM_NAMESPACE_ERR: Raised if qualifiedName is a malformed qualified name, or if qualifiedName has a prefix and namespace is null.

版本	说明
8.3.0	Calling this method without specifying a prefix will now choose a prefix instead of assuming the default namespace. Previously this would create an attribute without a prefix and incorrectly apply the namespace to the owner element because default namespaces don't apply on attributes.
8.3.0	Calling this method using a prefix that was already declared on the owner element with a different namespace URI will now change the new prefix to avoid creating namespace conflicts. This aligns the behaviour with the DOM specification. Previously this threw a DOMException with code `DOM_NAMESPACE_ERR`.

DOMNode::appendChild() - Adds new child at the end of the children
DOMDocument::createAttribute() - Create new attribute
DOMDocument::createCDATASection() - Create new cdata node
DOMDocument::createComment() - Create new comment node
DOMDocument::createDocumentFragment() - Create new document fragment
DOMDocument::createElement() - Create new element node
DOMDocument::createElementNS() - Create new element node with an associated namespace
DOMDocument::createEntityReference() - Create new entity reference node
DOMDocument::createProcessingInstruction() - Creates new PI node
DOMDocument::createTextNode() - Create new text node

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