Strict comparison using === between DOMElement and false #12278
Description
Bug report
Hello
First of all - Thanks for the great open source tool!
We have some issues with the latest phpstan
$cpd = $this->document->createElement(self::CPD_ELEMENT_NAME);
if ($cpd === false) {
$this->generateException("Can not create element: %s", self::CPD_ELEMENT_NAME);
}
$result = $this->document->appendChild($cpd);
Error 1: "phpstan: Strict comparison using === between DOMElement and false will always evaluate to false."
Error 2: "phpstan: Parameter #1 $node of method DOMNode::appendChild() expects DOMNode, DOMElement|false given."
dom_c.php:
/**
* Create new element node
* @link https://php.net/manual/en/domdocument.createelement.php
* @param string $localName <p>
* The tag name of the element.
* </p>
* @param string $value [optional] <p>
* The value of the element. By default, an empty element will be created.
* You can also set the value later with DOMElement->nodeValue.
* </p>
* @return DOMElement|false A new instance of class DOMElement or false
* if an error occurred.
* @throws DOMException If invalid $localName
*/
public function createElement(
#[LanguageLevelTypeAware(['8.0' => 'string'], default: '')] $localName,
#[LanguageLevelTypeAware(['8.0' => 'string'], default: '')] $value = ''
) {}
Code snippet that reproduces the problem
Expected output
no error
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