The DOMElement::getAttributeNS() function is an inbuilt function in PHP which is used to get the value of the attribute in a specific namespace with local name for the current node.
Syntax:
string DOMElement::getAttributeNS( string $namespaceURI, string $localName )
Parameters: This function accepts two parameters as mentioned above and described below:
- $namespaceURI: It specifies the namespace URI.
- $localName: It specifies the local name.
Return Value: This function returns a string value containing the value of attribute, or an empty string if no attribute with the given localName and namespaceURI is found.
Below examples illustrate the DOMElement::getAttributeNS() function in PHP:
Example 1:
<?php   // Create a new DOMDocument $dom = new DOMDocument();   // Load the XML $dom->loadXML("<?xml version=\"1.0\"?> <body xmlns:x=\"my_namespace\">     <x:div x:attr=\"value\" > DIV 1 </x:div> </body>");   // Get the elements by tagname $elements = $dom->getElementsByTagName('div');   // Get the attribute node value $nodeValue = $elements[0]->getAttributeNS('my_namespace', 'attr');   echo $nodeValue; ?> |
Output:
value
Example 2:
<?php   // Create a new DOMDocument $dom = new DOMDocument();   // Load the XML $dom->loadXML("<?xml version=\"1.0\"?> <root> <body xmlns:x=\"my_namespace1\">     <x:div x:id=\"my_id1\" > DIV 1 </x:div>     <x:div x:id=\"my_id2\" > DIV 1 </x:div> </body> <body xmlns:xi=\"my_namespace2\">     <xi:div xi:id=\"new\" > DIV 1 </xi:div> </body> </root>");   // Get the elements by tagname $elements = $dom->getElementsByTagName('div');   foreach ($elements as $element) {       // Get node value only from my_namespace1     $nodeValue = $element->getAttributeNS('my_namespace1', 'id');       if ($nodeValue) {        echo $nodeValue . '<br>';     } } ?> |
Output:
my_id1 my_id2
Reference: https://www.php.net/manual/en/domelement.getattributens.php
