The DOMElement::hasAttribute() function is an inbuilt function in PHP which is used to know whether attribute with a specific name exists as a member of the element.
Syntax:
bool DOMElement::hasAttribute( string $name )
Parameters: This function accepts a single parameter $name which holds the name of attribute.
Return Value: This function returns TRUE on success or FALSE on failure.
Below given programs illustrate the DOMElement::hasAttribute() function in PHP:
Program 1:
<?php // Create a new DOMDocument $dom = new DOMDocument();
// Load the XML $dom ->loadXML("<?xml version=\"1.0\"?>
<root> <div>
<!-- id attribute is there -->
<p id=\"prog\"> HELLO </p>
</div>
</root>"); // Get the elements $nodeList = $dom ->getElementsByTagName( 'p' );
foreach ( $nodeList as $node ) {
if ( $node ->hasAttribute( 'id' )) {
echo "Yes, id attribute is there." ;
}
} ?> |
Output:
Yes, id attribute is there.
Program 2:
<?php // Create a new DOMDocument $dom = new DOMDocument();
// Load the XML $dom ->loadXML("<?xml version=\"1.0\"?>
<root> <div>
<!-- id attribute is missing -->
<p> HELLO </p>
</div>
</root>"); // Get the elements $nodeList = $dom ->getElementsByTagName( 'p' );
foreach ( $nodeList as $node ) {
if (! $node ->hasAttribute( 'id' )) {
echo "No, id attribute isn't there." ;
}
} ?> |
Output:
No, id attribute isn't there.
Reference: https://www.php.net/manual/en/domelement.hasattribute.php