The DOMElement::setIdAttributeNode() function is an inbuilt function in PHP which is used to declare the attribute specified by DOMAttr instance to be of type ID.
Syntax:
void DOMElement::setIdAttributeNode( DOMAttr $attr, bool $isId )
Parameters: This function accepts two parameters as mentioned above and described below:
- $attr: It specifies the attribute as a DOMAttr instance.
- $isId: It specifies whether if you want name to be of type ID.
Return Value: This function returns nothing.
Exceptions: This function throws DOM_NO_MODIFICATION_ALLOWED_ERR, if the node is readonly or DOM_NOT_FOUND, if name is not an attribute of this element.
Below examples illustrate the DOMElement::setIdAttributeNode() function in PHP:
Example 1:
<?php   // Create a new DOM Document $dom = new DOMDocument('1.0', 'iso-8859-1');    // Enable validate on parse $dom->validateOnParse = true;    // Create a div element $element = $dom->appendChild(new DOMElement                   ('div', 'GEEKSFORGEEKS'));   // Create the id element $id = new DOMAttr('id', 'neveropen');   // Create a id attribute to div $attr = $element->setAttributeNode($id);   // Set that attribute as id $element->setIDAttributeNode($id, true);   echo $dom->saveXML(); ?> |
Output:
Example 2:
<?php   // Create a new DOM Document $dom = new DOMDocument('1.0', 'iso-8859-1');    // Enable validate on parse $dom->validateOnParse = true;    // Create a div element $element = $dom->appendChild(new DOMElement                  ('div', 'Hey ! This is my content.'));   // Create the id element $id = new DOMAttr('id', 'neveropen');   // Create a id attribute to div $attr = $element->setAttributeNode($id);   // Set that attribute as id $element->setIDAttributeNode($id, true);   // Get the text of element with id='neveropen' // just to see if it works $value = $dom->getElementById('neveropen')->textContent;     echo $value; ?> |
Output:
Hey ! This is my content.
Reference: https://www.php.net/manual/en/domelement.setidattributenode.php
