DOMElement::setIdAttribute

(PHP 5, PHP 7, PHP 8)

DOMElement::setIdAttribute — Declares the attribute specified by name to be of type ID

public DOMElement::setIdAttribute(string $qualifiedName, bool $isId): void

Declares the attribute qualifiedName to be of type ID.

qualifiedName: The name of the attribute.
isId: Set it to true if you want qualifiedName to be of type ID, false otherwise.

没有返回值。

DOM_NO_MODIFICATION_ALLOWED_ERR: Raised if the node is readonly.
DOM_NOT_FOUND_ERR: Raised if qualifiedName is not an attribute of this element.

DOMDocument::getElementById() - Searches for an element with a certain id
DOMElement::setIdAttributeNode() - Declares the attribute specified by node to be of type ID
DOMElement::setIdAttributeNS() - Declares the attribute specified by local name and namespace URI to be of type ID