Deprecated Functionality: parse_url(): Passing null to parameter #1 ($url) of type string is deprecated

Question

I am using magento 2.4.6 One of my modules is adding meta tags in catalog. Not my code

case 'catalog_product_view':
 $currentProduct = $this->_registry->registry('current_product');
 if ($currentProduct && $currentProduct->getData('enable_index_follow')) {
 $indexValue = $currentProduct->getData('index_value');
 $followValue = $currentProduct->getData('follow_value');
 $indexFollowValue = $this->_indexFollowBuilder->getIndexFollowValue($indexValue, $followValue);
 $this->_pageConfig->setRobots($indexFollowValue);
 }
 if ($currentProduct && $currentProduct->getData('enable_canonical_url')) {
 $canonicalUrl = $currentProduct->getData('canonical_url');
 $urlOptions = parse_url($canonicalUrl);
 if (!isset($urlOptions['scheme'])) {
 $canonicalUrl = $baseUrl . $canonicalUrl;
 }
 $this->_pageConfig->addRemotePageAsset(
 $canonicalUrl,
 'canonical',
 ['attributes' => ['rel' => 'canonical']]
 );
 }
 break;

Line:

$urlOptions = parse_url($canonicalUrl);

throw error:

Deprecated Functionality: parse_url(): Passing null to parameter #1 ($url) of type string is deprecated

I can't fix it.

Any help please?

Answer 1

Instead of null you can use empty string.

chnage below code from

$canonicalUrl = $currentProduct->getData('canonical_url');

to

$canonicalUrl = $currentProduct->getData('canonical_url') ?? '';

Answer 2

Please try this once, Hope it will work.

Repalce from :-

$urlOptions = parse_url($canonicalUrl);

Repalce to :-

$urlOptions = parse_url($canonicalUrl ?? '');