diff --git a/src/Illuminate/Cache/Repository.php b/src/Illuminate/Cache/Repository.php
index 114b3ca9d85b..e34c2857291d 100755
--- a/src/Illuminate/Cache/Repository.php
+++ b/src/Illuminate/Cache/Repository.php
@@ -131,6 +131,8 @@ public function many(array $keys)
 
     /**
      * {@inheritdoc}
+     *
+     * @return iterable
      */
     public function getMultiple($keys, $default = null)
     {
@@ -219,6 +221,8 @@ public function put($key, $value, $ttl = null)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function set($key, $value, $ttl = null)
     {
@@ -276,6 +280,8 @@ protected function putManyForever(array $values)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function setMultiple($values, $ttl = null)
     {
@@ -439,6 +445,8 @@ public function forget($key)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function delete($key)
     {
@@ -447,6 +455,8 @@ public function delete($key)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function deleteMultiple($keys)
     {
@@ -463,6 +473,8 @@ public function deleteMultiple($keys)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function clear()
     {
diff --git a/src/Illuminate/Console/Application.php b/src/Illuminate/Console/Application.php
index 345ab941116e..b68cbbaa8e05 100755
--- a/src/Illuminate/Console/Application.php
+++ b/src/Illuminate/Console/Application.php
@@ -76,6 +76,8 @@ public function __construct(Container $laravel, Dispatcher $events, $version)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int
      */
     public function run(InputInterface $input = null, OutputInterface $output = null)
     {
diff --git a/src/Illuminate/Console/Command.php b/src/Illuminate/Console/Command.php
index 4ad47351e4a1..5c8c179f03cf 100755
--- a/src/Illuminate/Console/Command.php
+++ b/src/Illuminate/Console/Command.php
@@ -163,6 +163,8 @@ protected function resolveCommand($command)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function isHidden()
     {
@@ -171,6 +173,8 @@ public function isHidden()
 
     /**
      * {@inheritdoc}
+     *
+     * @return static
      */
     public function setHidden(bool $hidden)
     {
diff --git a/src/Illuminate/Container/Container.php b/src/Illuminate/Container/Container.php
index 6900226de4f9..bf7bb8e559ac 100755
--- a/src/Illuminate/Container/Container.php
+++ b/src/Illuminate/Container/Container.php
@@ -187,7 +187,9 @@ public function bound($abstract)
     }
 
     /**
-     *  {@inheritdoc}
+     * {@inheritdoc}
+     *
+     * @return bool
      */
     public function has($id)
     {
@@ -693,7 +695,9 @@ public function make($abstract, array $parameters = [])
     }
 
     /**
-     *  {@inheritdoc}
+     * {@inheritdoc}
+     *
+     * @return mixed
      */
     public function get($id)
     {
diff --git a/src/Illuminate/Container/Util.php b/src/Illuminate/Container/Util.php
index 8180a45a5798..8f7e9171d6ef 100644
--- a/src/Illuminate/Container/Util.php
+++ b/src/Illuminate/Container/Util.php
@@ -53,7 +53,7 @@ public static function getParameterClassName($parameter)
         $type = $parameter->getType();
 
         if (! $type instanceof ReflectionNamedType || $type->isBuiltin()) {
-            return;
+            return null;
         }
 
         $name = $type->getName();
diff --git a/src/Illuminate/Database/DBAL/TimestampType.php b/src/Illuminate/Database/DBAL/TimestampType.php
index 0ab733cfe520..e2edc0f5147d 100644
--- a/src/Illuminate/Database/DBAL/TimestampType.php
+++ b/src/Illuminate/Database/DBAL/TimestampType.php
@@ -10,6 +10,8 @@ class TimestampType extends Type
 {
     /**
      * {@inheritdoc}
+     *
+     * @return string
      */
     public function getSQLDeclaration(array $fieldDeclaration, AbstractPlatform $platform)
     {
@@ -97,6 +99,8 @@ protected function getSQLitePlatformSQLDeclaration(array $fieldDeclaration)
 
     /**
      * {@inheritdoc}
+     *
+     * @return string
      */
     public function getName()
     {
diff --git a/src/Illuminate/Database/PDO/SqlServerDriver.php b/src/Illuminate/Database/PDO/SqlServerDriver.php
index bbb3bbd32397..1373fc49f6e0 100644
--- a/src/Illuminate/Database/PDO/SqlServerDriver.php
+++ b/src/Illuminate/Database/PDO/SqlServerDriver.php
@@ -6,6 +6,9 @@
 
 class SqlServerDriver extends AbstractSQLServerDriver
 {
+    /**
+     * @return \Doctrine\DBAL\Driver\Connection
+     */
     public function connect(array $params)
     {
         return new SqlServerConnection(
diff --git a/src/Illuminate/Foundation/Application.php b/src/Illuminate/Foundation/Application.php
index b614d76085b3..5f0bfe0b2dd8 100755
--- a/src/Illuminate/Foundation/Application.php
+++ b/src/Illuminate/Foundation/Application.php
@@ -958,6 +958,8 @@ protected function fireAppCallbacks(array $callbacks)
 
     /**
      * {@inheritdoc}
+     *
+     * @return \Symfony\Component\HttpFoundation\Response
      */
     public function handle(SymfonyRequest $request, int $type = self::MASTER_REQUEST, bool $catch = true)
     {
diff --git a/src/Illuminate/Http/JsonResponse.php b/src/Illuminate/Http/JsonResponse.php
index 5b103480a840..b2e205ce8fe0 100755
--- a/src/Illuminate/Http/JsonResponse.php
+++ b/src/Illuminate/Http/JsonResponse.php
@@ -34,6 +34,8 @@ public function __construct($data = null, $status = 200, $headers = [], $options
 
     /**
      * {@inheritdoc}
+     *
+     * @return static
      */
     public static function fromJsonString(?string $data = null, int $status = 200, array $headers = [])
     {
@@ -65,6 +67,8 @@ public function getData($assoc = false, $depth = 512)
 
     /**
      * {@inheritdoc}
+     *
+     * @return static
      */
     public function setData($data = [])
     {
@@ -109,6 +113,8 @@ protected function hasValidJson($jsonError)
 
     /**
      * {@inheritdoc}
+     *
+     * @return static
      */
     public function setEncodingOptions($options)
     {
diff --git a/src/Illuminate/Http/Request.php b/src/Illuminate/Http/Request.php
index dc03374f6651..934488bd2a40 100644
--- a/src/Illuminate/Http/Request.php
+++ b/src/Illuminate/Http/Request.php
@@ -456,6 +456,8 @@ public static function createFromBase(SymfonyRequest $request)
 
     /**
      * {@inheritdoc}
+     *
+     * @return static
      */
     public function duplicate(array $query = null, array $request = null, array $attributes = null, array $cookies = null, array $files = null, array $server = null)
     {
diff --git a/src/Illuminate/Mail/Transport/ArrayTransport.php b/src/Illuminate/Mail/Transport/ArrayTransport.php
index fbedec9560aa..fe6fdf7dd281 100644
--- a/src/Illuminate/Mail/Transport/ArrayTransport.php
+++ b/src/Illuminate/Mail/Transport/ArrayTransport.php
@@ -26,6 +26,8 @@ public function __construct()
 
     /**
      * {@inheritdoc}
+     *
+     * @return int
      */
     public function send(Swift_Mime_SimpleMessage $message, &$failedRecipients = null)
     {
diff --git a/src/Illuminate/Mail/Transport/LogTransport.php b/src/Illuminate/Mail/Transport/LogTransport.php
index 43a2faa204ce..21f1aae96df4 100644
--- a/src/Illuminate/Mail/Transport/LogTransport.php
+++ b/src/Illuminate/Mail/Transport/LogTransport.php
@@ -28,6 +28,8 @@ public function __construct(LoggerInterface $logger)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int
      */
     public function send(Swift_Mime_SimpleMessage $message, &$failedRecipients = null)
     {
diff --git a/src/Illuminate/Mail/Transport/MailgunTransport.php b/src/Illuminate/Mail/Transport/MailgunTransport.php
index 1c862b1a7f30..256a8c423a80 100644
--- a/src/Illuminate/Mail/Transport/MailgunTransport.php
+++ b/src/Illuminate/Mail/Transport/MailgunTransport.php
@@ -55,6 +55,8 @@ public function __construct(ClientInterface $client, $key, $domain, $endpoint =
 
     /**
      * {@inheritdoc}
+     *
+     * @return int
      */
     public function send(Swift_Mime_SimpleMessage $message, &$failedRecipients = null)
     {
diff --git a/src/Illuminate/Mail/Transport/SesTransport.php b/src/Illuminate/Mail/Transport/SesTransport.php
index 76eb2a8a03c3..24eb78f4a5cf 100644
--- a/src/Illuminate/Mail/Transport/SesTransport.php
+++ b/src/Illuminate/Mail/Transport/SesTransport.php
@@ -36,6 +36,8 @@ public function __construct(SesClient $ses, $options = [])
 
     /**
      * {@inheritdoc}
+     *
+     * @return int
      */
     public function send(Swift_Mime_SimpleMessage $message, &$failedRecipients = null)
     {
diff --git a/src/Illuminate/Mail/Transport/Transport.php b/src/Illuminate/Mail/Transport/Transport.php
index b26bff3ff57d..62b44957cf0c 100644
--- a/src/Illuminate/Mail/Transport/Transport.php
+++ b/src/Illuminate/Mail/Transport/Transport.php
@@ -18,6 +18,8 @@ abstract class Transport implements Swift_Transport
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function isStarted()
     {
@@ -42,6 +44,8 @@ public function stop()
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     public function ping()
     {
diff --git a/src/Illuminate/Session/ArraySessionHandler.php b/src/Illuminate/Session/ArraySessionHandler.php
index 1dcaa607feb4..9a0dff1850fc 100644
--- a/src/Illuminate/Session/ArraySessionHandler.php
+++ b/src/Illuminate/Session/ArraySessionHandler.php
@@ -36,6 +36,8 @@ public function __construct($minutes)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
@@ -45,6 +47,8 @@ public function open($savePath, $sessionName)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function close()
@@ -54,6 +58,8 @@ public function close()
 
     /**
      * {@inheritdoc}
+     *
+     * @return string|false
      */
     #[\ReturnTypeWillChange]
     public function read($sessionId)
@@ -75,6 +81,8 @@ public function read($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
@@ -89,6 +97,8 @@ public function write($sessionId, $data)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function destroy($sessionId)
@@ -102,6 +112,8 @@ public function destroy($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int|false
      */
     #[\ReturnTypeWillChange]
     public function gc($lifetime)
diff --git a/src/Illuminate/Session/CacheBasedSessionHandler.php b/src/Illuminate/Session/CacheBasedSessionHandler.php
index dbff7726da6e..5db2ac55537f 100755
--- a/src/Illuminate/Session/CacheBasedSessionHandler.php
+++ b/src/Illuminate/Session/CacheBasedSessionHandler.php
@@ -36,6 +36,8 @@ public function __construct(CacheContract $cache, $minutes)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
@@ -45,6 +47,8 @@ public function open($savePath, $sessionName)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function close()
@@ -54,6 +58,8 @@ public function close()
 
     /**
      * {@inheritdoc}
+     *
+     * @return string|false
      */
     #[\ReturnTypeWillChange]
     public function read($sessionId)
@@ -63,6 +69,8 @@ public function read($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
@@ -72,6 +80,8 @@ public function write($sessionId, $data)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function destroy($sessionId)
@@ -81,6 +91,8 @@ public function destroy($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int|false
      */
     #[\ReturnTypeWillChange]
     public function gc($lifetime)
diff --git a/src/Illuminate/Session/CookieSessionHandler.php b/src/Illuminate/Session/CookieSessionHandler.php
index 6437b67c40d1..0a1d9cd4e188 100755
--- a/src/Illuminate/Session/CookieSessionHandler.php
+++ b/src/Illuminate/Session/CookieSessionHandler.php
@@ -47,6 +47,8 @@ public function __construct(CookieJar $cookie, $minutes)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
@@ -56,6 +58,8 @@ public function open($savePath, $sessionName)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function close()
@@ -65,6 +69,8 @@ public function close()
 
     /**
      * {@inheritdoc}
+     *
+     * @return string|false
      */
     #[\ReturnTypeWillChange]
     public function read($sessionId)
@@ -82,6 +88,8 @@ public function read($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
@@ -96,6 +104,8 @@ public function write($sessionId, $data)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function destroy($sessionId)
@@ -107,6 +117,8 @@ public function destroy($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int|false
      */
     #[\ReturnTypeWillChange]
     public function gc($lifetime)
diff --git a/src/Illuminate/Session/DatabaseSessionHandler.php b/src/Illuminate/Session/DatabaseSessionHandler.php
index 39adc9da2d60..39c463fa71ba 100644
--- a/src/Illuminate/Session/DatabaseSessionHandler.php
+++ b/src/Illuminate/Session/DatabaseSessionHandler.php
@@ -69,6 +69,8 @@ public function __construct(ConnectionInterface $connection, $table, $minutes, C
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
@@ -78,6 +80,8 @@ public function open($savePath, $sessionName)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function close()
@@ -87,6 +91,8 @@ public function close()
 
     /**
      * {@inheritdoc}
+     *
+     * @return string|false
      */
     #[\ReturnTypeWillChange]
     public function read($sessionId)
@@ -122,6 +128,8 @@ protected function expired($session)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
@@ -257,6 +265,8 @@ protected function userAgent()
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function destroy($sessionId)
@@ -268,6 +278,8 @@ public function destroy($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int|false
      */
     #[\ReturnTypeWillChange]
     public function gc($lifetime)
diff --git a/src/Illuminate/Session/FileSessionHandler.php b/src/Illuminate/Session/FileSessionHandler.php
index 52928a20d52e..27c5e8fb52f9 100644
--- a/src/Illuminate/Session/FileSessionHandler.php
+++ b/src/Illuminate/Session/FileSessionHandler.php
@@ -47,6 +47,8 @@ public function __construct(Filesystem $files, $path, $minutes)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
@@ -56,6 +58,8 @@ public function open($savePath, $sessionName)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function close()
@@ -65,6 +69,8 @@ public function close()
 
     /**
      * {@inheritdoc}
+     *
+     * @return string|false
      */
     #[\ReturnTypeWillChange]
     public function read($sessionId)
@@ -80,6 +86,8 @@ public function read($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
@@ -91,6 +99,8 @@ public function write($sessionId, $data)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function destroy($sessionId)
@@ -102,6 +112,8 @@ public function destroy($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int|false
      */
     #[\ReturnTypeWillChange]
     public function gc($lifetime)
diff --git a/src/Illuminate/Session/NullSessionHandler.php b/src/Illuminate/Session/NullSessionHandler.php
index 778f48fa42e3..b9af93ab635f 100644
--- a/src/Illuminate/Session/NullSessionHandler.php
+++ b/src/Illuminate/Session/NullSessionHandler.php
@@ -8,6 +8,8 @@ class NullSessionHandler implements SessionHandlerInterface
 {
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
@@ -17,6 +19,8 @@ public function open($savePath, $sessionName)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function close()
@@ -26,6 +30,8 @@ public function close()
 
     /**
      * {@inheritdoc}
+     *
+     * @return string|false
      */
     #[\ReturnTypeWillChange]
     public function read($sessionId)
@@ -35,6 +41,8 @@ public function read($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
@@ -44,6 +52,8 @@ public function write($sessionId, $data)
 
     /**
      * {@inheritdoc}
+     *
+     * @return bool
      */
     #[\ReturnTypeWillChange]
     public function destroy($sessionId)
@@ -53,6 +63,8 @@ public function destroy($sessionId)
 
     /**
      * {@inheritdoc}
+     *
+     * @return int|false
      */
     #[\ReturnTypeWillChange]
     public function gc($lifetime)
diff --git a/src/Illuminate/Translation/MessageSelector.php b/src/Illuminate/Translation/MessageSelector.php
index c1328d59342d..177fa12f4843 100755
--- a/src/Illuminate/Translation/MessageSelector.php
+++ b/src/Illuminate/Translation/MessageSelector.php
@@ -61,7 +61,7 @@ private function extractFromString($part, $number)
         preg_match('/^[\{\[]([^\[\]\{\}]*)[\}\]](.*)/s', $part, $matches);
 
         if (count($matches) !== 3) {
-            return;
+            return null;
         }
 
         $condition = $matches[1];