The DOMElement::removeAttribute() function is an inbuilt function in PHP which is used to remove a attribute with specific name from the element.
Syntax:
bool DOMElement::removeAttribute( string $name )
Parameters: This function accepts a single parameter $name which holds the name of the attribute.
Return Value: This function returns TRUE on success or FALSE on failure.
Exceptions: This function throws DOM_NO_MODIFICATION_ALLOWED_ERR, if the node is read-only.
Below examples illustrate the DOMElement::removeAttribute() function in PHP:
Example 1:
<?php // Create a new DOMDocument $dom = new DOMDocument();
// Load the XML $dom ->loadXML("<?xml version=\"1.0\"?>
<root> <html>
<h1 id=\"my_id\"> Geeksforgeeks </h1>
<h2> Second heading </h2>
</html>
</root>"); // Get the elements $node = $dom ->getElementsByTagName( 'h1' )[0];
echo "Before the removal of attributes: <br>" ;
// 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 ;
// Remove the id attribute $node ->removeAttribute( 'id' );
echo "<br>After the removal of attributes: <br>" ;
// 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 ;
?> |
Output:
Before the removal of attributes: id => my_id After the removal of attributes: => // Empty value means attribute is removed
Example 2:
<?php // Create a new DOMDocument $dom = new DOMDocument();
// Load the XML $dom ->loadXML("<?xml version=\"1.0\"?>
<root> <html>
<h1 id=\"my_id\"
style=\"color:green;\"
class =\"my_class\">
Geeksforgeeks
</h1>
<h2> Second heading </h2>
</html>
</root>"); // Get the elements $node = $dom ->getElementsByTagName( 'h1' )[0];
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 ->removeAttribute( '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 => 3 After the removal of attributes: No of attributes => 2
Reference: https://www.php.net/manual/en/domelement.removeattribute.php