diff --git a/components/property_access.rst b/components/property_access.rst
index 7b9053b835f..5cd5095908a 100644
--- a/components/property_access.rst
+++ b/components/property_access.rst
@@ -237,9 +237,7 @@ enable this feature by using :class:`Symfony\\Component\\PropertyAccess\\Propert
         {
             $property = lcfirst(substr($name, 3));
             if ('get' === substr($name, 0, 3)) {
-                return isset($this->children[$property])
-                    ? $this->children[$property]
-                    : null;
+                return $this->children[$property] ?? null;
             } elseif ('set' === substr($name, 0, 3)) {
                 $value = 1 == count($args) ? $args[0] : null;
                 $this->children[$property] = $value;
@@ -334,9 +332,7 @@ see `Enable other Features`_::
         {
             $property = lcfirst(substr($name, 3));
             if ('get' === substr($name, 0, 3)) {
-                return isset($this->children[$property])
-                    ? $this->children[$property]
-                    : null;
+                return $this->children[$property] ?? null;
             } elseif ('set' === substr($name, 0, 3)) {
                 $value = 1 == count($args) ? $args[0] : null;
                 $this->children[$property] = $value;
diff --git a/create_framework/http_foundation.rst b/create_framework/http_foundation.rst
index 99dff5c1faf..3c84dd25e57 100644
--- a/create_framework/http_foundation.rst
+++ b/create_framework/http_foundation.rst
@@ -25,7 +25,7 @@ First, if the ``name`` query parameter is not defined in the URL query string,
 you will get a PHP warning; so let's fix it::
 
     // framework/index.php
-    $name = isset($_GET['name']) ? $_GET['name'] : 'World';
+    $name = $_GET['name'] ?? 'World';
 
     printf('Hello %s', $name);
 
@@ -33,7 +33,7 @@ Then, this *application is not secure*. Can you believe it? Even this simple
 snippet of PHP code is vulnerable to one of the most widespread Internet
 security issue, XSS (Cross-Site Scripting). Here is a more secure version::
 
-    $name = isset($_GET['name']) ? $_GET['name'] : 'World';
+    $name = $_GET['name'] ?? 'World';
 
     header('Content-Type: text/html; charset=utf-8');
 
diff --git a/frontend/custom_version_strategy.rst b/frontend/custom_version_strategy.rst
index 6361ba632c0..d6280637b7f 100644
--- a/frontend/custom_version_strategy.rst
+++ b/frontend/custom_version_strategy.rst
@@ -83,7 +83,7 @@ version string::
                 $this->hashes = $this->loadManifest();
             }
 
-            return isset($this->hashes[$path]) ? $this->hashes[$path] : '';
+            return $this->hashes[$path] ?? '';
         }
 
         public function applyVersion($path)