PHP | DOMElement hasAttribute() Function

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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."; 
    } 
} 
?> 