The DOMElement::removeAttributeNS() function is an inbuilt function in PHP which is used to remove the attribute with a specific local name in a specific namespace from the element.
Syntax:
bool DOMElement::removeAttributeNS( 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 TRUE on success or FALSE on failure.
Exceptions: This function throws DOM_NO_MODIFICATION_ALLOWED_ERR when the node is read-only.
Below examples illustrate the DOMElement::removeAttributeNS() function in PHP:
Example 1:
<?php   // Create a new DOMDocument $dom = new DOMDocument();   // Load the XML $dom->loadXML("<?xml version=\"1.0\"?> <root>     <html xmlns:x=\"my_namespace\">         <x:h1 x:id=\"my_id\"> Geeksforneveropen </x:h1>         <x:h2> Second heading </x:h2>     </html>     <html xmlns:y=\"another_namespace\">         <y:h1 id=\"my_new_id\"> Random text </y:h1>         <y:h2> Another heading </y:h2>     </html> </root>");   // Get the elements $nodes = $dom->getElementsByTagName('h1');   echo "Before the removal of attributes: <br>";   foreach ($nodes as $node) {       // Get the attribute name and value     $attribute = $node->attributes->item(0);     $attribute_name = $attribute->name;     $attribute_value = $attribute->value;       echo $attribute_name . ' => ';     echo $attribute_value . '<br>';       // Remove the id attribute     $node->removeAttributeNS('my_namespace', 'id'); }   echo "<br>After the removal of attributes: <br>";   foreach ($nodes as $node) {     // Get the attribute name and value     $attribute = $node->attributes->item(0);     $attribute_name = $attribute->name;     $attribute_value = $attribute->value;     echo $attribute_name . ' => ';     echo $attribute_value . '<br>'; } ?> |
Output:
Before the removal of attributes: id => my_id id => my_new_id After the removal of attributes: => // Empty string means attribute is removed id => my_new_id
Example 2:
<?php    // Create a new DOMDocument $dom = new DOMDocument();    // Load the XML $dom->loadXML("<?xml version=\"1.0\"?> <root>     <html xmlns:x=\"my_namespace\">         <x:h1 x:id=\"my_id\">         Geeksforneveropen         </x:h1>         <x:h2> Second heading </x:h2>     </html>     <html xmlns:y=\"another_namespace\">         <y:h1 y:id=\"my_new_id\"          y:style=\"color: blue;\">          Random text          </y:h1>         <y:h2> Another heading </y:h2>     </html> </root>");    // Get the elements $node = $dom->getElementsByTagName('h1')[1];     echo "Before the removal of attributes: <br>";    // Get the attribute count $attributeCount = $node->attributes->count(); echo 'No of attributes => ' . $attributeCount;     // Remove the id attribute $node->removeAttributeNS('another_namespace', 'id');     echo "<br>After the removal of attributes: <br>";     // Get the attribute count $attributeCount = $node->attributes->count(); echo 'No of attributes => ' . $attributeCount; ?> |
Output:
Before the removal of attributes: No of attributes => 2 After the removal of attributes: No of attributes => 1
Reference: https://www.php.net/manual/en/domelement.removeattributens.php
