diff --git a/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php b/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
index d8ecf9f3ea4c..552a4def37f7 100644
--- a/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
+++ b/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
@@ -138,11 +138,9 @@ public function hasAttribute(string $name)
     /**
      * Returns an attribute by its name.
      *
-     * @param mixed $default
-     *
      * @return mixed
      */
-    public function getAttribute(string $name, $default = null)
+    public function getAttribute(string $name, mixed $default = null)
     {
         return $this->attributes[$name] ?? $default;
     }
diff --git a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
index 908c16a0908e..cea0463981e5 100644
--- a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
+++ b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
@@ -44,7 +44,7 @@ class BinaryFileResponse extends Response
      * @param bool                $autoEtag           Whether the ETag header should be automatically set
      * @param bool                $autoLastModified   Whether the Last-Modified header should be automatically set
      */
-    public function __construct($file, int $status = 200, array $headers = [], bool $public = true, string $contentDisposition = null, bool $autoEtag = false, bool $autoLastModified = true)
+    public function __construct(\SplFileInfo|string $file, int $status = 200, array $headers = [], bool $public = true, string $contentDisposition = null, bool $autoEtag = false, bool $autoLastModified = true)
     {
         parent::__construct(null, $status, $headers);
 
@@ -58,13 +58,11 @@ public function __construct($file, int $status = 200, array $headers = [], bool
     /**
      * Sets the file to stream.
      *
-     * @param \SplFileInfo|string $file The file to stream
-     *
      * @return $this
      *
      * @throws FileException
      */
-    public function setFile($file, string $contentDisposition = null, bool $autoEtag = false, bool $autoLastModified = true)
+    public function setFile(\SplFileInfo|string $file, string $contentDisposition = null, bool $autoEtag = false, bool $autoLastModified = true)
     {
         if (!$file instanceof File) {
             if ($file instanceof \SplFileInfo) {
diff --git a/src/Symfony/Component/HttpFoundation/Cookie.php b/src/Symfony/Component/HttpFoundation/Cookie.php
index 03a49155ea20..f210eb5308eb 100644
--- a/src/Symfony/Component/HttpFoundation/Cookie.php
+++ b/src/Symfony/Component/HttpFoundation/Cookie.php
@@ -71,7 +71,7 @@ public static function fromString(string $cookie, bool $decode = false)
         return new static($name, $value, $data['expires'], $data['path'], $data['domain'], $data['secure'], $data['httponly'], $data['raw'], $data['samesite']);
     }
 
-    public static function create(string $name, string $value = null, $expire = 0, ?string $path = '/', string $domain = null, bool $secure = null, bool $httpOnly = true, bool $raw = false, ?string $sameSite = self::SAMESITE_LAX): self
+    public static function create(string $name, string $value = null, int|string|\DateTimeInterface $expire = 0, ?string $path = '/', string $domain = null, bool $secure = null, bool $httpOnly = true, bool $raw = false, ?string $sameSite = self::SAMESITE_LAX): self
     {
         return new self($name, $value, $expire, $path, $domain, $secure, $httpOnly, $raw, $sameSite);
     }
@@ -89,7 +89,7 @@ public static function create(string $name, string $value = null, $expire = 0, ?
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct(string $name, string $value = null, $expire = 0, ?string $path = '/', string $domain = null, bool $secure = null, bool $httpOnly = true, bool $raw = false, ?string $sameSite = 'lax')
+    public function __construct(string $name, string $value = null, int|string|\DateTimeInterface $expire = 0, ?string $path = '/', string $domain = null, bool $secure = null, bool $httpOnly = true, bool $raw = false, ?string $sameSite = 'lax')
     {
         // from PHP source code
         if ($raw && false !== strpbrk($name, self::$reservedCharsList)) {
@@ -140,11 +140,9 @@ public function withDomain(?string $domain): self
     /**
      * Creates a cookie copy with a new time the cookie expires.
      *
-     * @param int|string|\DateTimeInterface $expire
-     *
      * @return static
      */
-    public function withExpires($expire = 0): self
+    public function withExpires(int|string|\DateTimeInterface $expire = 0): self
     {
         $cookie = clone $this;
         $cookie->expire = self::expiresTimestamp($expire);
@@ -154,12 +152,8 @@ public function withExpires($expire = 0): self
 
     /**
      * Converts expires formats to a unix timestamp.
-     *
-     * @param int|string|\DateTimeInterface $expire
-     *
-     * @return int
      */
-    private static function expiresTimestamp($expire = 0)
+    private static function expiresTimestamp(int|string|\DateTimeInterface $expire = 0): int
     {
         // convert expiration time to a Unix timestamp
         if ($expire instanceof \DateTimeInterface) {
diff --git a/src/Symfony/Component/HttpFoundation/Exception/SessionNotFoundException.php b/src/Symfony/Component/HttpFoundation/Exception/SessionNotFoundException.php
index eb7acbbafc38..9c719aa041be 100644
--- a/src/Symfony/Component/HttpFoundation/Exception/SessionNotFoundException.php
+++ b/src/Symfony/Component/HttpFoundation/Exception/SessionNotFoundException.php
@@ -20,7 +20,7 @@
  */
 class SessionNotFoundException extends \LogicException implements RequestExceptionInterface
 {
-    public function __construct($message = 'There is currently no session available.', $code = 0, \Throwable $previous = null)
+    public function __construct(string $message = 'There is currently no session available.', int $code = 0, \Throwable $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }
diff --git a/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php b/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php
index 26bed7d3713e..8451f9013608 100644
--- a/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php
+++ b/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\HttpFoundation;
 
+use Symfony\Component\ExpressionLanguage\Expression;
 use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
 
 /**
@@ -23,7 +24,7 @@ class ExpressionRequestMatcher extends RequestMatcher
     private $language;
     private $expression;
 
-    public function setExpression(ExpressionLanguage $language, $expression)
+    public function setExpression(ExpressionLanguage $language, Expression|string $expression)
     {
         $this->language = $language;
         $this->expression = $expression;
diff --git a/src/Symfony/Component/HttpFoundation/File/Exception/UnexpectedTypeException.php b/src/Symfony/Component/HttpFoundation/File/Exception/UnexpectedTypeException.php
index 8533f99a8c9a..905bd5962881 100644
--- a/src/Symfony/Component/HttpFoundation/File/Exception/UnexpectedTypeException.php
+++ b/src/Symfony/Component/HttpFoundation/File/Exception/UnexpectedTypeException.php
@@ -13,7 +13,7 @@
 
 class UnexpectedTypeException extends FileException
 {
-    public function __construct($value, string $expectedType)
+    public function __construct(mixed $value, string $expectedType)
     {
         parent::__construct(sprintf('Expected argument of type %s, %s given', $expectedType, get_debug_type($value)));
     }
diff --git a/src/Symfony/Component/HttpFoundation/File/UploadedFile.php b/src/Symfony/Component/HttpFoundation/File/UploadedFile.php
index 1adc84156a3a..8aa2f03a33f1 100644
--- a/src/Symfony/Component/HttpFoundation/File/UploadedFile.php
+++ b/src/Symfony/Component/HttpFoundation/File/UploadedFile.php
@@ -231,7 +231,7 @@ public static function getMaxFilesize()
      *
      * @return int|float Returns float if size > PHP_INT_MAX
      */
-    private static function parseFilesize($size)
+    private static function parseFilesize(string $size)
     {
         if ('' === $size) {
             return 0;
diff --git a/src/Symfony/Component/HttpFoundation/FileBag.php b/src/Symfony/Component/HttpFoundation/FileBag.php
index 14622b57a0f8..598a5fd04394 100644
--- a/src/Symfony/Component/HttpFoundation/FileBag.php
+++ b/src/Symfony/Component/HttpFoundation/FileBag.php
@@ -43,7 +43,7 @@ public function replace(array $files = [])
     /**
      * {@inheritdoc}
      */
-    public function set(string $key, $value)
+    public function set(string $key, mixed $value)
     {
         if (!\is_array($value) && !$value instanceof UploadedFile) {
             throw new \InvalidArgumentException('An uploaded file must be an array or an instance of UploadedFile.');
@@ -65,32 +65,28 @@ public function add(array $files = [])
     /**
      * Converts uploaded files to UploadedFile instances.
      *
-     * @param array|UploadedFile $file A (multi-dimensional) array of uploaded file information
-     *
      * @return UploadedFile[]|UploadedFile|null A (multi-dimensional) array of UploadedFile instances
      */
-    protected function convertFileInformation($file)
+    protected function convertFileInformation(array|UploadedFile $file)
     {
         if ($file instanceof UploadedFile) {
             return $file;
         }
 
-        if (\is_array($file)) {
-            $file = $this->fixPhpFilesArray($file);
-            $keys = array_keys($file);
-            sort($keys);
-
-            if (self::FILE_KEYS == $keys) {
-                if (\UPLOAD_ERR_NO_FILE == $file['error']) {
-                    $file = null;
-                } else {
-                    $file = new UploadedFile($file['tmp_name'], $file['name'], $file['type'], $file['error'], false);
-                }
+        $file = $this->fixPhpFilesArray($file);
+        $keys = array_keys($file);
+        sort($keys);
+
+        if (self::FILE_KEYS == $keys) {
+            if (\UPLOAD_ERR_NO_FILE == $file['error']) {
+                $file = null;
             } else {
-                $file = array_map([$this, 'convertFileInformation'], $file);
-                if (array_keys($keys) === $keys) {
-                    $file = array_filter($file);
-                }
+                $file = new UploadedFile($file['tmp_name'], $file['name'], $file['type'], $file['error'], false);
+            }
+        } else {
+            $file = array_map(function ($v) { return $v instanceof UploadedFile || \is_array($v) ? $this->convertFileInformation($v) : $v; }, $file);
+            if (array_keys($keys) === $keys) {
+                $file = array_filter($file);
             }
         }
 
@@ -109,11 +105,9 @@ protected function convertFileInformation($file)
      * It's safe to pass an already converted array, in which case this method
      * just returns the original array unmodified.
      *
-     * @param array $data
-     *
      * @return array
      */
-    protected function fixPhpFilesArray($data)
+    protected function fixPhpFilesArray(array $data)
     {
         $keys = array_keys($data);
         sort($keys);
diff --git a/src/Symfony/Component/HttpFoundation/HeaderBag.php b/src/Symfony/Component/HttpFoundation/HeaderBag.php
index 20ef039efa80..a0938429f7f9 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderBag.php
@@ -121,10 +121,10 @@ public function get(string $key, string $default = null)
     /**
      * Sets a header by name.
      *
-     * @param string|string[] $values  The value or an array of values
-     * @param bool            $replace Whether to replace the actual value or not (true by default)
+     * @param string|string[]|null $values  The value or an array of values
+     * @param bool                 $replace Whether to replace the actual value or not (true by default)
      */
-    public function set(string $key, $values, bool $replace = true)
+    public function set(string $key, string|array|null $values, bool $replace = true)
     {
         $key = strtr($key, self::UPPER, self::LOWER);
 
@@ -186,7 +186,7 @@ public function remove(string $key)
     /**
      * Returns the HTTP header value converted to a date.
      *
-     * @return \DateTimeInterface|null The parsed DateTime or the default value if the header does not exist
+     * @return \DateTime|null The parsed DateTime or the default value if the header does not exist
      *
      * @throws \RuntimeException When the HTTP header is not parseable
      */
@@ -205,10 +205,8 @@ public function getDate(string $key, \DateTime $default = null)
 
     /**
      * Adds a custom Cache-Control directive.
-     *
-     * @param mixed $value The Cache-Control directive value
      */
-    public function addCacheControlDirective(string $key, $value = true)
+    public function addCacheControlDirective(string $key, bool|string $value = true)
     {
         $this->cacheControl[$key] = $value;
 
@@ -228,11 +226,11 @@ public function hasCacheControlDirective(string $key)
     /**
      * Returns a Cache-Control directive value by name.
      *
-     * @return mixed The directive value if defined, null otherwise
+     * @return bool|string|null The directive value if defined, null otherwise
      */
     public function getCacheControlDirective(string $key)
     {
-        return \array_key_exists($key, $this->cacheControl) ? $this->cacheControl[$key] : null;
+        return $this->cacheControl[$key] ?? null;
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/InputBag.php b/src/Symfony/Component/HttpFoundation/InputBag.php
index 6bec212c4590..3b96e4f5d22a 100644
--- a/src/Symfony/Component/HttpFoundation/InputBag.php
+++ b/src/Symfony/Component/HttpFoundation/InputBag.php
@@ -24,10 +24,8 @@ final class InputBag extends ParameterBag
      * Returns a scalar input value by name.
      *
      * @param string|int|float|bool|null $default The default value if the input key does not exist
-     *
-     * @return string|int|float|bool|null
      */
-    public function get(string $key, $default = null)
+    public function get(string $key, mixed $default = null): string|int|float|bool|null
     {
         if (null !== $default && !is_scalar($default) && !$default instanceof \Stringable) {
             throw new \InvalidArgumentException(sprintf('Excepted a scalar value as a 2nd argument to "%s()", "%s" given.', __METHOD__, get_debug_type($default)));
@@ -74,7 +72,7 @@ public function add(array $inputs = [])
      *
      * @param string|int|float|bool|array|null $value
      */
-    public function set(string $key, $value)
+    public function set(string $key, mixed $value)
     {
         if (null !== $value && !is_scalar($value) && !\is_array($value) && !$value instanceof \Stringable) {
             throw new \InvalidArgumentException(sprintf('Excepted a scalar, or an array as a 2nd argument to "%s()", "%s" given.', __METHOD__, get_debug_type($value)));
@@ -86,7 +84,7 @@ public function set(string $key, $value)
     /**
      * {@inheritdoc}
      */
-    public function filter(string $key, $default = null, int $filter = \FILTER_DEFAULT, $options = [])
+    public function filter(string $key, mixed $default = null, int $filter = \FILTER_DEFAULT, mixed $options = [])
     {
         $value = $this->has($key) ? $this->all()[$key] : $default;
 
diff --git a/src/Symfony/Component/HttpFoundation/IpUtils.php b/src/Symfony/Component/HttpFoundation/IpUtils.php
index 27fe725929f7..70738c8d5ed6 100644
--- a/src/Symfony/Component/HttpFoundation/IpUtils.php
+++ b/src/Symfony/Component/HttpFoundation/IpUtils.php
@@ -34,7 +34,7 @@ private function __construct()
      *
      * @return bool Whether the IP is valid
      */
-    public static function checkIp(?string $requestIp, $ips)
+    public static function checkIp(?string $requestIp, string|array $ips)
     {
         if (!\is_array($ips)) {
             $ips = [$ips];
diff --git a/src/Symfony/Component/HttpFoundation/JsonResponse.php b/src/Symfony/Component/HttpFoundation/JsonResponse.php
index d1565190e4e6..292e3937f44b 100644
--- a/src/Symfony/Component/HttpFoundation/JsonResponse.php
+++ b/src/Symfony/Component/HttpFoundation/JsonResponse.php
@@ -34,12 +34,9 @@ class JsonResponse extends Response
     protected $encodingOptions = self::DEFAULT_ENCODING_OPTIONS;
 
     /**
-     * @param mixed $data    The response data
-     * @param int   $status  The response status code
-     * @param array $headers An array of response headers
-     * @param bool  $json    If the data is already a JSON string
+     * @param bool $json If the data is already a JSON string
      */
-    public function __construct($data = null, int $status = 200, array $headers = [], bool $json = false)
+    public function __construct(mixed $data = null, int $status = 200, array $headers = [], bool $json = false)
     {
         parent::__construct('', $status, $headers);
 
@@ -123,13 +120,11 @@ public function setJson(string $json)
     /**
      * Sets the data to be sent as JSON.
      *
-     * @param mixed $data
-     *
      * @return $this
      *
      * @throws \InvalidArgumentException
      */
-    public function setData($data = [])
+    public function setData(mixed $data = [])
     {
         try {
             $data = json_encode($data, $this->encodingOptions);
diff --git a/src/Symfony/Component/HttpFoundation/ParameterBag.php b/src/Symfony/Component/HttpFoundation/ParameterBag.php
index 2f6db742364d..6cbd945c2dd5 100644
--- a/src/Symfony/Component/HttpFoundation/ParameterBag.php
+++ b/src/Symfony/Component/HttpFoundation/ParameterBag.php
@@ -79,23 +79,14 @@ public function add(array $parameters = [])
     }
 
     /**
-     * Returns a parameter by name.
-     *
-     * @param mixed $default The default value if the parameter key does not exist
-     *
      * @return mixed
      */
-    public function get(string $key, $default = null)
+    public function get(string $key, mixed $default = null)
     {
         return \array_key_exists($key, $this->parameters) ? $this->parameters[$key] : $default;
     }
 
-    /**
-     * Sets a parameter by name.
-     *
-     * @param mixed $value The value
-     */
-    public function set(string $key, $value)
+    public function set(string $key, mixed $value)
     {
         $this->parameters[$key] = $value;
     }
@@ -172,15 +163,13 @@ public function getBoolean(string $key, bool $default = false)
     /**
      * Filter key.
      *
-     * @param mixed $default Default = null
-     * @param int   $filter  FILTER_* constant
-     * @param mixed $options Filter options
+     * @param int $filter FILTER_* constant
      *
      * @see https://php.net/filter-var
      *
      * @return mixed
      */
-    public function filter(string $key, $default = null, int $filter = \FILTER_DEFAULT, $options = [])
+    public function filter(string $key, mixed $default = null, int $filter = \FILTER_DEFAULT, mixed $options = [])
     {
         $value = $this->get($key, $default);
 
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 0e86148db82b..2e4954a967f7 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -693,11 +693,9 @@ public static function getHttpMethodParameterOverride()
      *
      * Order of precedence: PATH (routing placeholders or custom attributes), GET, POST
      *
-     * @param mixed $default The default value if the parameter key does not exist
-     *
      * @return mixed
      */
-    public function get(string $key, $default = null)
+    public function get(string $key, mixed $default = null)
     {
         if ($this !== $result = $this->attributes->get($key, $this)) {
             return $result;
@@ -1351,7 +1349,7 @@ public function getFormat(?string $mimeType)
      *
      * @param string|array $mimeTypes The associated mime types (the preferred one must be the first as it will be used as the content type)
      */
-    public function setFormat(?string $format, $mimeTypes)
+    public function setFormat(?string $format, string|array $mimeTypes)
     {
         if (null === static::$formats) {
             static::initializeFormats();
diff --git a/src/Symfony/Component/HttpFoundation/RequestMatcher.php b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
index f02db30b1d95..1e686b1e1327 100644
--- a/src/Symfony/Component/HttpFoundation/RequestMatcher.php
+++ b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
@@ -58,7 +58,7 @@ class RequestMatcher implements RequestMatcherInterface
      * @param string|string[]|null $ips
      * @param string|string[]|null $schemes
      */
-    public function __construct(string $path = null, string $host = null, $methods = null, $ips = null, array $attributes = [], $schemes = null, int $port = null)
+    public function __construct(string $path = null, string $host = null, string|array|null $methods = null, string|array|null $ips = null, array $attributes = [], string|array|null $schemes = null, int $port = null)
     {
         $this->matchPath($path);
         $this->matchHost($host);
@@ -77,7 +77,7 @@ public function __construct(string $path = null, string $host = null, $methods =
      *
      * @param string|string[]|null $scheme An HTTP scheme or an array of HTTP schemes
      */
-    public function matchScheme($scheme)
+    public function matchScheme(string|array|null $scheme)
     {
         $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : [];
     }
@@ -123,7 +123,7 @@ public function matchIp(string $ip)
      *
      * @param string|string[]|null $ips A specific IP address or a range specified using IP/netmask like 192.168.1.0/24
      */
-    public function matchIps($ips)
+    public function matchIps(string|array|null $ips)
     {
         $ips = null !== $ips ? (array) $ips : [];
 
@@ -137,7 +137,7 @@ public function matchIps($ips)
      *
      * @param string|string[]|null $method An HTTP method or an array of HTTP methods
      */
-    public function matchMethod($method)
+    public function matchMethod(string|array|null $method)
     {
         $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : [];
     }
diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index 4d47dfd05145..7c129f4f573a 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -441,7 +441,7 @@ public function getProtocolVersion(): string
      *
      * @final
      */
-    public function setStatusCode(int $code, $text = null): object
+    public function setStatusCode(int $code, string $text = null): object
     {
         $this->statusCode = $code;
         if ($this->isInvalid()) {
@@ -1034,14 +1034,13 @@ public function getVary(): array
     /**
      * Sets the Vary header.
      *
-     * @param string|array $headers
-     * @param bool         $replace Whether to replace the actual value or not (true by default)
+     * @param bool $replace Whether to replace the actual value or not (true by default)
      *
      * @return $this
      *
      * @final
      */
-    public function setVary($headers, bool $replace = true): object
+    public function setVary(string|array $headers, bool $replace = true): object
     {
         $this->headers->set('Vary', $headers, $replace);
 
diff --git a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
index 780a5df6cd99..f8ff3ef7de0b 100644
--- a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
@@ -108,7 +108,7 @@ public function all(string $key = null)
     /**
      * {@inheritdoc}
      */
-    public function set(string $key, $values, bool $replace = true)
+    public function set(string $key, string|array|null $values, bool $replace = true)
     {
         $uniqueKey = strtr($key, self::UPPER, self::LOWER);
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php b/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php
index aad6b610e7bb..54feb960d441 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php
@@ -69,7 +69,7 @@ public function has(string $name)
     /**
      * {@inheritdoc}
      */
-    public function get(string $name, $default = null)
+    public function get(string $name, mixed $default = null)
     {
         return \array_key_exists($name, $this->attributes) ? $this->attributes[$name] : $default;
     }
@@ -77,7 +77,7 @@ public function get(string $name, $default = null)
     /**
      * {@inheritdoc}
      */
-    public function set(string $name, $value)
+    public function set(string $name, mixed $value)
     {
         $this->attributes[$name] = $value;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBagInterface.php b/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBagInterface.php
index 7017b717e406..c94d65fed4ff 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBagInterface.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBagInterface.php
@@ -30,18 +30,14 @@ public function has(string $name);
     /**
      * Returns an attribute.
      *
-     * @param mixed $default The default value if not found
-     *
      * @return mixed
      */
-    public function get(string $name, $default = null);
+    public function get(string $name, mixed $default = null);
 
     /**
      * Sets an attribute.
-     *
-     * @param mixed $value
      */
-    public function set(string $name, $value);
+    public function set(string $name, mixed $value);
 
     /**
      * Returns attributes.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php b/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
index 2707d64ec713..a860246148f5 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
@@ -60,7 +60,7 @@ public function initialize(array &$flashes)
     /**
      * {@inheritdoc}
      */
-    public function add(string $type, $message)
+    public function add(string $type, mixed $message)
     {
         $this->flashes['new'][$type][] = $message;
     }
@@ -122,7 +122,7 @@ public function setAll(array $messages)
     /**
      * {@inheritdoc}
      */
-    public function set(string $type, $messages)
+    public function set(string $type, string|array $messages)
     {
         $this->flashes['new'][$type] = (array) $messages;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php
index 88df7508ac68..c01e61963d70 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php
@@ -54,7 +54,7 @@ public function initialize(array &$flashes)
     /**
      * {@inheritdoc}
      */
-    public function add(string $type, $message)
+    public function add(string $type, mixed $message)
     {
         $this->flashes[$type][] = $message;
     }
@@ -105,7 +105,7 @@ public function all()
     /**
      * {@inheritdoc}
      */
-    public function set(string $type, $messages)
+    public function set(string $type, string|array $messages)
     {
         $this->flashes[$type] = (array) $messages;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php
index 8713e71d0f62..e1144cac839d 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php
@@ -22,17 +22,13 @@ interface FlashBagInterface extends SessionBagInterface
 {
     /**
      * Adds a flash message for the given type.
-     *
-     * @param mixed $message
      */
-    public function add(string $type, $message);
+    public function add(string $type, mixed $message);
 
     /**
      * Registers one or more messages for a given type.
-     *
-     * @param string|array $messages
      */
-    public function set(string $type, $messages);
+    public function set(string $type, string|array $messages);
 
     /**
      * Gets flash messages for a given type.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Session.php b/src/Symfony/Component/HttpFoundation/Session/Session.php
index e4e25356376e..649850760af1 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Session.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Session.php
@@ -70,7 +70,7 @@ public function has(string $name)
     /**
      * {@inheritdoc}
      */
-    public function get(string $name, $default = null)
+    public function get(string $name, mixed $default = null)
     {
         return $this->getAttributeBag()->get($name, $default);
     }
@@ -78,7 +78,7 @@ public function get(string $name, $default = null)
     /**
      * {@inheritdoc}
      */
-    public function set(string $name, $value)
+    public function set(string $name, mixed $value)
     {
         $this->getAttributeBag()->set($name, $value);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php b/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php
index b2f09fd0dc71..7c587efb34af 100644
--- a/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php
+++ b/src/Symfony/Component/HttpFoundation/Session/SessionInterface.php
@@ -101,18 +101,14 @@ public function has(string $name);
     /**
      * Returns an attribute.
      *
-     * @param mixed $default The default value if not found
-     *
      * @return mixed
      */
-    public function get(string $name, $default = null);
+    public function get(string $name, mixed $default = null);
 
     /**
      * Sets an attribute.
-     *
-     * @param mixed $value
      */
-    public function set(string $name, $value);
+    public function set(string $name, mixed $value);
 
     /**
      * Returns attributes.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
index eaebd31c651d..c2a5aa9cf314 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
@@ -32,7 +32,7 @@ abstract class AbstractSessionHandler implements \SessionHandlerInterface, \Sess
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function open($savePath, $sessionName)
+    public function open(string $savePath, string $sessionName)
     {
         $this->sessionName = $sessionName;
         if (!headers_sent() && !ini_get('session.cache_limiter') && '0' !== ini_get('session.cache_limiter')) {
@@ -61,7 +61,7 @@ abstract protected function doDestroy(string $sessionId);
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function validateId($sessionId)
+    public function validateId(string $sessionId)
     {
         $this->prefetchData = $this->read($sessionId);
         $this->prefetchId = $sessionId;
@@ -73,7 +73,7 @@ public function validateId($sessionId)
      * @return string
      */
     #[\ReturnTypeWillChange]
-    public function read($sessionId)
+    public function read(string $sessionId)
     {
         if (null !== $this->prefetchId) {
             $prefetchId = $this->prefetchId;
@@ -97,7 +97,7 @@ public function read($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function write($sessionId, $data)
+    public function write(string $sessionId, string $data)
     {
         if (null === $this->igbinaryEmptyData) {
             // see https://github.com/igbinary/igbinary/issues/146
@@ -115,7 +115,7 @@ public function write($sessionId, $data)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function destroy($sessionId)
+    public function destroy(string $sessionId)
     {
         if (!headers_sent() && filter_var(ini_get('session.use_cookies'), \FILTER_VALIDATE_BOOLEAN)) {
             if (!$this->sessionName) {
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MarshallingSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MarshallingSessionHandler.php
index e1cad6a9454e..939495104eb5 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MarshallingSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MarshallingSessionHandler.php
@@ -30,7 +30,7 @@ public function __construct(AbstractSessionHandler $handler, MarshallerInterface
     /**
      * @return bool
      */
-    public function open($savePath, $name)
+    public function open(string $savePath, string $name)
     {
         return $this->handler->open($savePath, $name);
     }
@@ -46,7 +46,7 @@ public function close()
     /**
      * @return bool
      */
-    public function destroy($sessionId)
+    public function destroy(string $sessionId)
     {
         return $this->handler->destroy($sessionId);
     }
@@ -54,7 +54,7 @@ public function destroy($sessionId)
     /**
      * @return bool
      */
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         return $this->handler->gc($maxlifetime);
     }
@@ -62,7 +62,7 @@ public function gc($maxlifetime)
     /**
      * @return string
      */
-    public function read($sessionId)
+    public function read(string $sessionId)
     {
         return $this->marshaller->unmarshall($this->handler->read($sessionId));
     }
@@ -70,7 +70,7 @@ public function read($sessionId)
     /**
      * @return bool
      */
-    public function write($sessionId, $data)
+    public function write(string $sessionId, string $data)
     {
         $failed = [];
         $marshalledData = $this->marshaller->marshall(['data' => $data], $failed);
@@ -85,7 +85,7 @@ public function write($sessionId, $data)
     /**
      * @return bool
      */
-    public function validateId($sessionId)
+    public function validateId(string $sessionId)
     {
         return $this->handler->validateId($sessionId);
     }
@@ -93,7 +93,7 @@ public function validateId($sessionId)
     /**
      * @return bool
      */
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         return $this->handler->updateTimestamp($sessionId, $data);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
index aeb9df60692d..a3313ac2da44 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
@@ -73,7 +73,7 @@ protected function doRead(string $sessionId)
     /**
      * @return bool
      */
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         $this->memcached->touch($this->prefix.$sessionId, time() + $this->ttl);
 
@@ -101,7 +101,7 @@ protected function doDestroy(string $sessionId)
     /**
      * @return bool
      */
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         // not required here because memcached will auto expire the records anyhow.
         return true;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MigratingSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MigratingSessionHandler.php
index c3e7ef6e60a3..50997bea4870 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MigratingSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MigratingSessionHandler.php
@@ -54,7 +54,7 @@ public function close()
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function destroy($sessionId)
+    public function destroy(string $sessionId)
     {
         $result = $this->currentHandler->destroy($sessionId);
         $this->writeOnlyHandler->destroy($sessionId);
@@ -66,7 +66,7 @@ public function destroy($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         $result = $this->currentHandler->gc($maxlifetime);
         $this->writeOnlyHandler->gc($maxlifetime);
@@ -78,7 +78,7 @@ public function gc($maxlifetime)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function open($savePath, $sessionName)
+    public function open(string $savePath, string $sessionName)
     {
         $result = $this->currentHandler->open($savePath, $sessionName);
         $this->writeOnlyHandler->open($savePath, $sessionName);
@@ -90,7 +90,7 @@ public function open($savePath, $sessionName)
      * @return string
      */
     #[\ReturnTypeWillChange]
-    public function read($sessionId)
+    public function read(string $sessionId)
     {
         // No reading from new handler until switch-over
         return $this->currentHandler->read($sessionId);
@@ -100,7 +100,7 @@ public function read($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function write($sessionId, $sessionData)
+    public function write(string $sessionId, string $sessionData)
     {
         $result = $this->currentHandler->write($sessionId, $sessionData);
         $this->writeOnlyHandler->write($sessionId, $sessionData);
@@ -112,7 +112,7 @@ public function write($sessionId, $sessionData)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function validateId($sessionId)
+    public function validateId(string $sessionId)
     {
         // No reading from new handler until switch-over
         return $this->currentHandler->validateId($sessionId);
@@ -122,7 +122,7 @@ public function validateId($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function updateTimestamp($sessionId, $sessionData)
+    public function updateTimestamp(string $sessionId, string $sessionData)
     {
         $result = $this->currentHandler->updateTimestamp($sessionId, $sessionData);
         $this->writeOnlyHandler->updateTimestamp($sessionId, $sessionData);
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
index 9a2d7919af90..e53a52bd70a9 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
@@ -102,7 +102,7 @@ protected function doDestroy(string $sessionId)
     /**
      * @return bool
      */
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         $this->getCollection()->deleteMany([
             $this->options['expiry_field'] => ['$lt' => new \MongoDB\BSON\UTCDateTime()],
@@ -136,7 +136,7 @@ protected function doWrite(string $sessionId, string $data)
     /**
      * @return bool
      */
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         $expiry = new \MongoDB\BSON\UTCDateTime((time() + (int) ini_get('session.gc_maxlifetime')) * 1000);
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NullSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NullSessionHandler.php
index bb182cd1cf60..bae0aeea52ca 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NullSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NullSessionHandler.php
@@ -31,7 +31,7 @@ public function close()
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function validateId($sessionId)
+    public function validateId(string $sessionId)
     {
         return true;
     }
@@ -48,7 +48,7 @@ protected function doRead(string $sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         return true;
     }
@@ -73,7 +73,7 @@ protected function doDestroy(string $sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         return true;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
index 02811a6e68b4..84872224ae5d 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
@@ -170,7 +170,7 @@ class PdoSessionHandler extends AbstractSessionHandler
      *
      * @throws \InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      */
-    public function __construct($pdoOrDsn = null, array $options = [])
+    public function __construct(\PDO|string|null $pdoOrDsn = null, array $options = [])
     {
         if ($pdoOrDsn instanceof \PDO) {
             if (\PDO::ERRMODE_EXCEPTION !== $pdoOrDsn->getAttribute(\PDO::ATTR_ERRMODE)) {
@@ -263,7 +263,7 @@ public function isSessionExpired()
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function open($savePath, $sessionName)
+    public function open(string $savePath, string $sessionName)
     {
         $this->sessionExpired = false;
 
@@ -278,7 +278,7 @@ public function open($savePath, $sessionName)
      * @return string
      */
     #[\ReturnTypeWillChange]
-    public function read($sessionId)
+    public function read(string $sessionId)
     {
         try {
             return parent::read($sessionId);
@@ -293,7 +293,7 @@ public function read($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         // We delay gc() to close() so that it is executed outside the transactional and blocking read-write process.
         // This way, pruning expired sessions does not block them from being started while the current session is used.
@@ -373,7 +373,7 @@ protected function doWrite(string $sessionId, string $data)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         $expiry = time() + (int) ini_get('session.gc_maxlifetime');
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
index 61714f1743cb..f5ffa886b001 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
@@ -40,11 +40,9 @@ class RedisSessionHandler extends AbstractSessionHandler
      *  * prefix: The prefix to use for the keys in order to avoid collision on the Redis server
      *  * ttl: The time to live in seconds.
      *
-     * @param \Redis|\RedisArray|\RedisCluster|\Predis\ClientInterface|RedisProxy|RedisClusterProxy $redis
-     *
      * @throws \InvalidArgumentException When unsupported client or options are passed
      */
-    public function __construct($redis, array $options = [])
+    public function __construct(\Redis|\RedisArray|\RedisCluster|\Predis\ClientInterface|RedisProxy|RedisClusterProxy $redis, array $options = [])
     {
         if (
             !$redis instanceof \Redis &&
@@ -117,7 +115,7 @@ public function close(): bool
     /**
      * {@inheritdoc}
      */
-    public function gc($maxlifetime): bool
+    public function gc(int $maxlifetime): bool
     {
         return true;
     }
@@ -125,7 +123,7 @@ public function gc($maxlifetime): bool
     /**
      * @return bool
      */
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         return (bool) $this->redis->expire($this->prefix.$sessionId, (int) ($this->ttl ?? ini_get('session.gc_maxlifetime')));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/SessionHandlerFactory.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/SessionHandlerFactory.php
index 93e403777aa7..e5a5abfc55c9 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/SessionHandlerFactory.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/SessionHandlerFactory.php
@@ -21,10 +21,7 @@
  */
 class SessionHandlerFactory
 {
-    /**
-     * @param \Redis|\RedisArray|\RedisCluster|\Predis\ClientInterface|RedisProxy|RedisClusterProxy|\Memcached|\PDO|string $connection Connection or DSN
-     */
-    public static function createHandler($connection): AbstractSessionHandler
+    public static function createHandler(object|string $connection): AbstractSessionHandler
     {
         if (!\is_string($connection) && !\is_object($connection)) {
             throw new \TypeError(sprintf('Argument 1 passed to "%s()" must be a string or a connection object, "%s" given.', __METHOD__, get_debug_type($connection)));
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php
index 0461e997e21c..84b7b80c9e48 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php
@@ -34,7 +34,7 @@ public function __construct(\SessionHandlerInterface $handler)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function open($savePath, $sessionName)
+    public function open(string $savePath, string $sessionName)
     {
         parent::open($savePath, $sessionName);
 
@@ -53,7 +53,7 @@ protected function doRead(string $sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         return $this->write($sessionId, $data);
     }
@@ -70,7 +70,7 @@ protected function doWrite(string $sessionId, string $data)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function destroy($sessionId)
+    public function destroy(string $sessionId)
     {
         $this->doDestroy = true;
         $destroyed = parent::destroy($sessionId);
@@ -101,7 +101,7 @@ public function close()
      * @return int|false
      */
     #[\ReturnTypeWillChange]
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         return $this->handler->gc($maxlifetime);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
index 1bdd2e75fe46..e95a2cfc51af 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
@@ -95,10 +95,8 @@ class NativeSessionStorage implements SessionStorageInterface
      * sid_bits_per_character, "5"
      * trans_sid_hosts, $_SERVER['HTTP_HOST']
      * trans_sid_tags, "a=href,area=href,frame=src,form="
-     *
-     * @param AbstractProxy|\SessionHandlerInterface|null $handler
      */
-    public function __construct(array $options = [], $handler = null, MetadataBag $metaBag = null)
+    public function __construct(array $options = [], AbstractProxy|\SessionHandlerInterface|null $handler = null, MetadataBag $metaBag = null)
     {
         if (!\extension_loaded('session')) {
             throw new \LogicException('PHP extension "session" is required.');
@@ -385,11 +383,9 @@ public function setOptions(array $options)
      * @see https://php.net/sessionhandlerinterface
      * @see https://php.net/sessionhandler
      *
-     * @param AbstractProxy|\SessionHandlerInterface|null $saveHandler
-     *
      * @throws \InvalidArgumentException
      */
-    public function setSaveHandler($saveHandler = null)
+    public function setSaveHandler(AbstractProxy|\SessionHandlerInterface|null $saveHandler = null)
     {
         if (!$saveHandler instanceof AbstractProxy &&
             !$saveHandler instanceof \SessionHandlerInterface &&
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorageFactory.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorageFactory.php
index a7d7411ff3fc..8b68447dc450 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorageFactory.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorageFactory.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\HttpFoundation\Session\Storage;
 
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Session\Storage\Proxy\AbstractProxy;
 
 // Help opcache.preload discover always-needed symbols
 class_exists(NativeSessionStorage::class);
@@ -29,7 +30,7 @@ class NativeSessionStorageFactory implements SessionStorageFactoryInterface
     /**
      * @see NativeSessionStorage constructor.
      */
-    public function __construct(array $options = [], $handler = null, MetadataBag $metaBag = null, bool $secure = false)
+    public function __construct(array $options = [], AbstractProxy|\SessionHandlerInterface|null $handler = null, MetadataBag $metaBag = null, bool $secure = false)
     {
         $this->options = $options;
         $this->handler = $handler;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorage.php
index 72dbef134671..dac89267c9e6 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorage.php
@@ -20,10 +20,7 @@
  */
 class PhpBridgeSessionStorage extends NativeSessionStorage
 {
-    /**
-     * @param AbstractProxy|\SessionHandlerInterface|null $handler
-     */
-    public function __construct($handler = null, MetadataBag $metaBag = null)
+    public function __construct(AbstractProxy|\SessionHandlerInterface|null $handler = null, MetadataBag $metaBag = null)
     {
         if (!\extension_loaded('session')) {
             throw new \LogicException('PHP extension "session" is required.');
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorageFactory.php b/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorageFactory.php
index 173ef71dea42..c7e0c9b0caac 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorageFactory.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/PhpBridgeSessionStorageFactory.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\HttpFoundation\Session\Storage;
 
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Session\Storage\Proxy\AbstractProxy;
 
 // Help opcache.preload discover always-needed symbols
 class_exists(PhpBridgeSessionStorage::class);
@@ -25,10 +26,7 @@ class PhpBridgeSessionStorageFactory implements SessionStorageFactoryInterface
     private $metaBag;
     private $secure;
 
-    /**
-     * @see PhpBridgeSessionStorage constructor.
-     */
-    public function __construct($handler = null, MetadataBag $metaBag = null, bool $secure = false)
+    public function __construct(AbstractProxy|\SessionHandlerInterface|null $handler = null, MetadataBag $metaBag = null, bool $secure = false)
     {
         $this->handler = $handler;
         $this->metaBag = $metaBag;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php
index 5535bc96441d..ddfbdad98722 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php
@@ -39,7 +39,7 @@ public function getHandler()
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function open($savePath, $sessionName)
+    public function open(string $savePath, string $sessionName)
     {
         return (bool) $this->handler->open($savePath, $sessionName);
     }
@@ -57,7 +57,7 @@ public function close()
      * @return string
      */
     #[\ReturnTypeWillChange]
-    public function read($sessionId)
+    public function read(string $sessionId)
     {
         return (string) $this->handler->read($sessionId);
     }
@@ -66,7 +66,7 @@ public function read($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function write($sessionId, $data)
+    public function write(string $sessionId, string $data)
     {
         return (bool) $this->handler->write($sessionId, $data);
     }
@@ -75,7 +75,7 @@ public function write($sessionId, $data)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function destroy($sessionId)
+    public function destroy(string $sessionId)
     {
         return (bool) $this->handler->destroy($sessionId);
     }
@@ -84,7 +84,7 @@ public function destroy($sessionId)
      * @return int|false
      */
     #[\ReturnTypeWillChange]
-    public function gc($maxlifetime)
+    public function gc(int $maxlifetime)
     {
         return $this->handler->gc($maxlifetime);
     }
@@ -93,7 +93,7 @@ public function gc($maxlifetime)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function validateId($sessionId)
+    public function validateId(string $sessionId)
     {
         return !$this->handler instanceof \SessionUpdateTimestampHandlerInterface || $this->handler->validateId($sessionId);
     }
@@ -102,7 +102,7 @@ public function validateId($sessionId)
      * @return bool
      */
     #[\ReturnTypeWillChange]
-    public function updateTimestamp($sessionId, $data)
+    public function updateTimestamp(string $sessionId, string $data)
     {
         return $this->handler instanceof \SessionUpdateTimestampHandlerInterface ? $this->handler->updateTimestamp($sessionId, $data) : $this->write($sessionId, $data);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php
index 57c4b948a91b..0bef08970679 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php
@@ -122,7 +122,7 @@ public function testUpdateTimestamp()
         $lowTtl = 10;
 
         $this->redisClient->setex(self::PREFIX.'id', $lowTtl, 'foo');
-        $this->storage->updateTimestamp('id', []);
+        $this->storage->updateTimestamp('id', 'data');
 
         $this->assertGreaterThan($lowTtl, $this->redisClient->ttl(self::PREFIX.'id'));
     }
diff --git a/src/Symfony/Component/RateLimiter/Exception/RateLimitExceededException.php b/src/Symfony/Component/RateLimiter/Exception/RateLimitExceededException.php
index e991a4897927..95ffadadcd47 100644
--- a/src/Symfony/Component/RateLimiter/Exception/RateLimitExceededException.php
+++ b/src/Symfony/Component/RateLimiter/Exception/RateLimitExceededException.php
@@ -22,7 +22,7 @@ class RateLimitExceededException extends \RuntimeException
 {
     private $rateLimit;
 
-    public function __construct(RateLimit $rateLimit, int|string $code = 0, \Throwable $previous = null)
+    public function __construct(RateLimit $rateLimit, int $code = 0, \Throwable $previous = null)
     {
         parent::__construct('Rate Limit Exceeded', $code, $previous);