Use ??= more

Author: nicolas-grekas

Crawler.php

@@ -281,9 +281,7 @@ public function addNode(\DOMNode $node)
             throw new \InvalidArgumentException('Attaching DOM nodes from multiple documents in the same crawler is forbidden.');
         }
 
-        if (null === $this->document) {
-            $this->document = $node->ownerDocument;
-        }
+        $this->document ??= $node->ownerDocument;
 
         // Don't add duplicate nodes in the Crawler
         if (\in_array($node, $this->nodes, true)) {

Tests/FormTest.php

@@ -902,9 +902,7 @@ protected function createForm($form, $method = null, $currentUri = null)
         $xPath = new \DOMXPath($dom);
         $nodes = $xPath->query('//input | //button');
 
-        if (null === $currentUri) {
-            $currentUri = 'http://example.com/';
-        }
+        $currentUri ??= 'http://example.com/';
 
         return new Form($nodes->item($nodes->length - 1), $currentUri, $method);
     }