diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 2733a91..be74a68 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -16,4 +16,4 @@ jobs:
     name: "PHPUnit"
     uses: "doctrine/.github/.github/workflows/continuous-integration.yml@3.0.0"
     with:
-      php-versions: '["7.4", "8.0", "8.1", "8.2"]'
+      php-versions: '["8.0", "8.1", "8.2"]'
diff --git a/composer.json b/composer.json
index 3e42bf6..51c5e6b 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "rss": "https://github.com/doctrine/doctrine-laminas-hydrator/releases.atom"
     },
     "require": {
-        "php": "^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0",
+        "php": "~8.0.0 || ~8.1.0 || ~8.2.0",
         "ext-ctype": "*",
         "doctrine/collections": "^1.6.8",
         "doctrine/inflector": "^2.0.4",
diff --git a/src/DoctrineObject.php b/src/DoctrineObject.php
index c335d42..e1d2d5b 100644
--- a/src/DoctrineObject.php
+++ b/src/DoctrineObject.php
@@ -27,33 +27,30 @@
 use function array_intersect_key;
 use function array_key_exists;
 use function array_keys;
-use function array_merge;
 use function assert;
 use function ctype_upper;
 use function current;
-use function get_class;
 use function get_class_methods;
 use function gettype;
 use function in_array;
 use function is_array;
 use function is_callable;
 use function is_int;
+use function is_iterable;
 use function is_object;
 use function is_string;
 use function method_exists;
 use function property_exists;
 use function sprintf;
+use function str_ends_with;
+use function str_starts_with;
 use function strpos;
 use function substr;
 
 class DoctrineObject extends AbstractHydrator
 {
-    protected ObjectManager $objectManager;
-
     protected ?ClassMetadata $metadata = null;
 
-    protected bool $byValue = true;
-
     /** @var class-string<Strategy\CollectionStrategyInterface> */
     protected string $defaultByValueStrategy = AllowRemoveByValue::class;
 
@@ -66,11 +63,9 @@ class DoctrineObject extends AbstractHydrator
      * @param ObjectManager $objectManager The ObjectManager to use
      * @param bool          $byValue       If set to true, hydrator will always use entity's public API
      */
-    public function __construct(ObjectManager $objectManager, bool $byValue = true, ?Inflector $inflector = null)
+    public function __construct(protected ObjectManager $objectManager, protected bool $byValue = true, ?Inflector $inflector = null)
     {
-        $this->objectManager = $objectManager;
-        $this->byValue       = $byValue;
-        $this->inflector     = $inflector ?? InflectorFactory::create()->build();
+        $this->inflector = $inflector ?? InflectorFactory::create()->build();
     }
 
     protected function getClassMetadata(): ClassMetadata
@@ -122,10 +117,7 @@ public function setDefaultByReferenceStrategy(string $defaultByReferenceStrategy
      */
     public function getFieldNames(): iterable
     {
-        $fields = array_merge(
-            $this->getClassMetadata()->getFieldNames(),
-            $this->getClassMetadata()->getAssociationNames()
-        );
+        $fields = [...$this->getClassMetadata()->getFieldNames(), ...$this->getClassMetadata()->getAssociationNames()];
 
         foreach ($fields as $fieldName) {
             $pos = strpos($fieldName, '.');
@@ -174,7 +166,7 @@ public function hydrate(array $data, object $object): object
      */
     protected function prepare(object $object): void
     {
-        $this->metadata = $this->objectManager->getClassMetadata(get_class($object));
+        $this->metadata = $this->objectManager->getClassMetadata($object::class);
         $this->prepareStrategies();
     }
 
@@ -210,7 +202,7 @@ protected function prepareStrategies(): void
                     sprintf(
                         'Strategies used for collections valued associations must inherit from %s, %s given',
                         Strategy\CollectionStrategyInterface::class,
-                        get_class($strategy)
+                        $strategy::class
                     )
                 );
             }
@@ -250,7 +242,7 @@ protected function extractByValue(object $object): array
             } elseif (in_array($isser, $methods)) {
                 $data[$dataFieldName] = $this->extractValue($fieldName, $object->$isser(), $object);
             } elseif (
-                substr($fieldName, 0, 2) === 'is'
+                str_starts_with($fieldName, 'is')
                 && ctype_upper(substr($fieldName, 2, 1))
                 && in_array($fieldName, $methods)
             ) {
@@ -283,7 +275,7 @@ protected function extractByReference(object $object): array
             throw new LogicException(
                 sprintf(
                     'this class "%s" is readonly, data can\'t be extracted',
-                    get_class($object)
+                    $object::class
                 )
             );
         }
@@ -441,7 +433,7 @@ protected function hydrateByReference(array $data, ?object $object): object
                 throw new LogicException(
                     sprintf(
                         'Cannot hydrate class "%s" by reference. Property "%s" is readonly. To fix this error, remove readonly.',
-                        get_class($object),
+                        $object::class,
                         $field
                     )
                 );
@@ -513,9 +505,8 @@ protected function tryConvertArrayToObject(array $data, object $object): ?object
      * target will be returned.
      *
      * @param  class-string $target
-     * @param  mixed        $value
      */
-    protected function toOne(string $target, $value): ?object
+    protected function toOne(string $target, mixed $value): ?object
     {
         $metadata = $this->objectManager->getClassMetadata($target);
 
@@ -540,11 +531,10 @@ protected function toOne(string $target, $value): ?object
      * changing the collection of the object
      *
      * @param  class-string $target
-     * @param  mixed        $values
      *
      * @throws InvalidArgumentException
      */
-    protected function toMany(object $object, string $collectionName, string $target, $values): void
+    protected function toMany(object $object, string $collectionName, string $target, mixed $values): void
     {
         $metadata   = $this->objectManager->getClassMetadata($target);
         $identifier = $metadata->getIdentifier();
@@ -609,9 +599,7 @@ protected function toMany(object $object, string $collectionName, string $target
 
         $collection = array_filter(
             $collection,
-            static function ($item) {
-                return $item !== null;
-            }
+            static fn ($item) => $item !== null
         );
 
         // Set the object so that the strategy can extract the Collection from it
@@ -630,11 +618,9 @@ static function ($item) {
      *
      * @link http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/basic-mapping.html#doctrine-mapping-types
      *
-     * @param  mixed $value
-     *
      * @return mixed|null
      */
-    protected function handleTypeConversions($value, ?string $typeOfField)
+    protected function handleTypeConversions(mixed $value, ?string $typeOfField)
     {
         if ($value === null) {
             return null;
@@ -667,7 +653,7 @@ protected function handleTypeConversions($value, ?string $typeOfField)
                     return null;
                 }
 
-                $isImmutable = substr($typeOfField, -9) === 'immutable';
+                $isImmutable = str_ends_with($typeOfField, 'immutable');
 
                 // Psalm has troubles with nested conditions, therefore break this into two return statements.
                 // See https://github.com/vimeo/psalm/issues/6683.
@@ -712,14 +698,13 @@ protected function handleTypeConversions($value, ?string $typeOfField)
     /**
      * Find an object by a given target class and identifier
      *
-     * @param  mixed $identifiers
      * @psalm-param class-string<T> $targetClass
      *
      * @psalm-return T|null
      *
      * @template T of object
      */
-    protected function find($identifiers, string $targetClass): ?object
+    protected function find(mixed $identifiers, string $targetClass): ?object
     {
         if ($identifiers instanceof $targetClass) {
             return $identifiers;
@@ -743,12 +728,10 @@ private function isNullIdentifier($identifier): bool
             return true;
         }
 
-        if ($identifier instanceof Traversable || is_array($identifier)) {
+        if (is_iterable($identifier)) {
             $nonNullIdentifiers = array_filter(
                 ArrayUtils::iteratorToArray($identifier),
-                static function ($value) {
-                    return $value !== null;
-                }
+                static fn ($value) => $value !== null
             );
 
             return empty($nonNullIdentifiers);
diff --git a/src/Filter/PropertyName.php b/src/Filter/PropertyName.php
index c3073a5..1c24cc9 100644
--- a/src/Filter/PropertyName.php
+++ b/src/Filter/PropertyName.php
@@ -18,15 +18,12 @@ final class PropertyName implements FilterInterface
     /** @var string[] */
     private array $properties = [];
 
-    private bool $exclude;
-
     /**
      * @param string|string[] $properties The properties to exclude or include.
      * @param bool            $exclude    If the method should be excluded
      */
-    public function __construct($properties, bool $exclude = true)
+    public function __construct($properties, private bool $exclude = true)
     {
-        $this->exclude    = $exclude;
         $this->properties = is_array($properties)
             ? $properties
             : [$properties];
diff --git a/src/Strategy/AbstractCollectionStrategy.php b/src/Strategy/AbstractCollectionStrategy.php
index 2fd5085..3ee2f65 100644
--- a/src/Strategy/AbstractCollectionStrategy.php
+++ b/src/Strategy/AbstractCollectionStrategy.php
@@ -13,7 +13,6 @@
 use LogicException;
 use ReflectionException;
 
-use function get_class;
 use function is_array;
 use function method_exists;
 use function spl_object_hash;
@@ -115,7 +114,7 @@ protected function getCollectionFromObjectByValue(): Collection
                     'The getter %s to access collection %s in object %s does not exist',
                     $getter,
                     $this->getCollectionName(),
-                    get_class($object)
+                    $object::class
                 )
             );
         }
diff --git a/src/Strategy/AllowRemoveByValue.php b/src/Strategy/AllowRemoveByValue.php
index 79c0473..677251f 100644
--- a/src/Strategy/AllowRemoveByValue.php
+++ b/src/Strategy/AllowRemoveByValue.php
@@ -8,7 +8,6 @@
 use LogicException;
 
 use function array_udiff;
-use function get_class;
 use function method_exists;
 use function sprintf;
 
@@ -43,7 +42,7 @@ public function hydrate($value, ?array $data)
                      entity domain code, but one or both seem to be missing',
                     $adder,
                     $remover,
-                    get_class($object)
+                    $object::class
                 )
             );
         }
diff --git a/src/Strategy/DisallowRemoveByValue.php b/src/Strategy/DisallowRemoveByValue.php
index f5417a9..c3103db 100644
--- a/src/Strategy/DisallowRemoveByValue.php
+++ b/src/Strategy/DisallowRemoveByValue.php
@@ -8,7 +8,6 @@
 use LogicException;
 
 use function array_udiff;
-use function get_class;
 use function method_exists;
 use function sprintf;
 
@@ -41,7 +40,7 @@ public function hydrate($value, ?array $data)
                     'DisallowRemove strategy for DoctrineModule hydrator requires %s to
                      be defined in %s entity domain code, but it seems to be missing',
                     $adder,
-                    get_class($object)
+                    $object::class
                 )
             );
         }
diff --git a/tests/Assets/ByValueDifferentiatorEntity.php b/tests/Assets/ByValueDifferentiatorEntity.php
index edbcfa8..d027912 100644
--- a/tests/Assets/ByValueDifferentiatorEntity.php
+++ b/tests/Assets/ByValueDifferentiatorEntity.php
@@ -13,18 +13,12 @@ class ByValueDifferentiatorEntity
 
     protected string $field;
 
-    /**
-     * @param string|int $id
-     */
-    public function setId($id): void
+    public function setId(string|int $id): void
     {
         $this->id = $id;
     }
 
-    /**
-     * @return string|int
-     */
-    public function getId()
+    public function getId(): string|int
     {
         return $this->id;
     }
diff --git a/tests/Assets/DifferentAllowRemoveByValue.php b/tests/Assets/DifferentAllowRemoveByValue.php
index 5c43352..250590c 100644
--- a/tests/Assets/DifferentAllowRemoveByValue.php
+++ b/tests/Assets/DifferentAllowRemoveByValue.php
@@ -9,7 +9,6 @@
 use LogicException;
 
 use function array_udiff;
-use function get_class;
 use function method_exists;
 use function sprintf;
 
@@ -35,7 +34,7 @@ public function hydrate($value, ?array $data)
                      entity domain code, but one or both seem to be missing',
                     $adder,
                     $remover,
-                    get_class($object)
+                    $object::class
                 )
             );
         }
diff --git a/tests/Assets/NamingStrategyEntity.php b/tests/Assets/NamingStrategyEntity.php
index 3a0a5a7..2e28472 100644
--- a/tests/Assets/NamingStrategyEntity.php
+++ b/tests/Assets/NamingStrategyEntity.php
@@ -6,11 +6,8 @@
 
 class NamingStrategyEntity
 {
-    protected ?string $camelCase = null;
-
-    public function __construct(?string $camelCase = null)
+    public function __construct(protected ?string $camelCase = null)
     {
-        $this->camelCase = $camelCase;
     }
 
     public function setCamelCase(?string $camelCase): void
diff --git a/tests/Assets/OneToOneEntity.php b/tests/Assets/OneToOneEntity.php
index e1940fb..3ee5b03 100644
--- a/tests/Assets/OneToOneEntity.php
+++ b/tests/Assets/OneToOneEntity.php
@@ -10,7 +10,7 @@ class OneToOneEntity
 {
     protected int $id;
 
-    protected ?ByValueDifferentiatorEntity $toOne;
+    protected ?ByValueDifferentiatorEntity $toOne = null;
 
     protected DateTime $createdAt;
 
diff --git a/tests/Assets/SimpleEntity.php b/tests/Assets/SimpleEntity.php
index ce4b037..f8c2471 100644
--- a/tests/Assets/SimpleEntity.php
+++ b/tests/Assets/SimpleEntity.php
@@ -11,18 +11,12 @@ class SimpleEntity
 
     protected string $field;
 
-    /**
-     * @param string|int $id
-     */
-    public function setId($id): void
+    public function setId(string|int $id): void
     {
         $this->id = $id;
     }
 
-    /**
-     * @return string|int
-     */
-    public function getId()
+    public function getId(): string|int
     {
         return $this->id;
     }
diff --git a/tests/Assets/SimpleEntityReadonlyPhp82.php b/tests/Assets/SimpleEntityReadonlyPhp82.php
index 037be2d..2f62666 100644
--- a/tests/Assets/SimpleEntityReadonlyPhp82.php
+++ b/tests/Assets/SimpleEntityReadonlyPhp82.php
@@ -6,13 +6,7 @@
 
 readonly class SimpleEntityReadonlyPhp82
 {
-    protected ?int $id;
-
-    protected ?string $field;
-
-    public function __construct(?int $id, ?string $field)
+    public function __construct(protected ?int $id, protected ?string $field)
     {
-        $this->id    = $id;
-        $this->field = $field;
     }
 }
diff --git a/tests/Assets/SimpleEntityWithDateTime.php b/tests/Assets/SimpleEntityWithDateTime.php
index 610f538..65f55f8 100644
--- a/tests/Assets/SimpleEntityWithDateTime.php
+++ b/tests/Assets/SimpleEntityWithDateTime.php
@@ -10,7 +10,7 @@ class SimpleEntityWithDateTime
 {
     protected int $id;
 
-    protected ?DateTime $date;
+    protected ?DateTime $date = null;
 
     public function setId(int $id): void
     {
diff --git a/tests/Assets/SimpleEntityWithGenericField.php b/tests/Assets/SimpleEntityWithGenericField.php
index e4c2acf..af24915 100644
--- a/tests/Assets/SimpleEntityWithGenericField.php
+++ b/tests/Assets/SimpleEntityWithGenericField.php
@@ -21,10 +21,7 @@ public function getId(): ?int
         return $this->id;
     }
 
-    /**
-     * @param mixed $value
-     */
-    public function setGenericField($value): void
+    public function setGenericField(mixed $value): void
     {
         $this->genericField = $value;
     }
diff --git a/tests/Assets/SimpleEntityWithReadonlyPropsPhp81.php b/tests/Assets/SimpleEntityWithReadonlyPropsPhp81.php
index dec46b2..dacff49 100644
--- a/tests/Assets/SimpleEntityWithReadonlyPropsPhp81.php
+++ b/tests/Assets/SimpleEntityWithReadonlyPropsPhp81.php
@@ -6,13 +6,10 @@
 
 class SimpleEntityWithReadonlyPropsPhp81
 {
-    protected readonly ?int $id;
-
     protected ?string $field;
 
-    public function __construct(?int $id)
+    public function __construct(protected readonly ?int $id)
     {
-        $this->id = $id;
     }
 
     public function getId(): int
diff --git a/tests/Assets/SimplePrivateEntity.php b/tests/Assets/SimplePrivateEntity.php
index 5d7f6b5..01adaf5 100644
--- a/tests/Assets/SimplePrivateEntity.php
+++ b/tests/Assets/SimplePrivateEntity.php
@@ -9,12 +9,10 @@
 class SimplePrivateEntity
 {
     /**
-     * @param         mixed $value
-     *
      * @phpcsSuppress SlevomatCodingStandard.Classes.UnusedPrivateElements
      * @phpstan-ignore-next-line
      */
-    private function setPrivate($value): void
+    private function setPrivate(mixed $value): void
     {
         throw new Exception('Should never be called');
     }
@@ -28,10 +26,7 @@ private function getPrivate(): void
         throw new Exception('Should never be called');
     }
 
-    /**
-     * @param mixed $value
-     */
-    protected function setProtected($value): void
+    protected function setProtected(mixed $value): void
     {
         throw new Exception('Should never be called');
     }
diff --git a/tests/DoctrineObjectTypeConversionsTest.php b/tests/DoctrineObjectTypeConversionsTest.php
index c843a9a..7e916f7 100644
--- a/tests/DoctrineObjectTypeConversionsTest.php
+++ b/tests/DoctrineObjectTypeConversionsTest.php
@@ -196,8 +196,8 @@ public function testHandleTypeConversionsDatetime(): void
 
         $entity = new Assets\SimpleEntityWithGenericField();
         $now    = new DateTime();
-        $now->setTimestamp(1522353676);
-        $data = ['genericField' => 1522353676];
+        $now->setTimestamp(1_522_353_676);
+        $data = ['genericField' => 1_522_353_676];
 
         $entity = $this->hydratorByValue->hydrate($data, $entity);
 
@@ -244,8 +244,8 @@ public function testHandleTypeConversionsDatetimeImmutable(): void
         $this->configureObjectManagerForSimpleEntityWithGenericField('datetime_immutable');
 
         $entity = new Assets\SimpleEntityWithGenericField();
-        $now    = (new DateTimeImmutable())->setTimestamp(1522353676);
-        $data   = ['genericField' => 1522353676];
+        $now    = (new DateTimeImmutable())->setTimestamp(1_522_353_676);
+        $data   = ['genericField' => 1_522_353_676];
 
         $entity = $this->hydratorByValue->hydrate($data, $entity);
 
@@ -293,8 +293,8 @@ public function testHandleTypeConversionsDatetimetz(): void
 
         $entity = new Assets\SimpleEntityWithGenericField();
         $now    = new DateTime();
-        $now->setTimestamp(1522353676);
-        $data = ['genericField' => 1522353676];
+        $now->setTimestamp(1_522_353_676);
+        $data = ['genericField' => 1_522_353_676];
 
         $entity = $this->hydratorByValue->hydrate($data, $entity);
 
@@ -341,8 +341,8 @@ public function testHandleTypeConversionsDatetimetzImmutable(): void
         $this->configureObjectManagerForSimpleEntityWithGenericField('datetimetz_immutable');
 
         $entity = new Assets\SimpleEntityWithGenericField();
-        $now    = (new DateTimeImmutable())->setTimestamp(1522353676);
-        $data   = ['genericField' => 1522353676];
+        $now    = (new DateTimeImmutable())->setTimestamp(1_522_353_676);
+        $data   = ['genericField' => 1_522_353_676];
 
         $entity = $this->hydratorByValue->hydrate($data, $entity);
 
@@ -390,8 +390,8 @@ public function testHandleTypeConversionsTime(): void
 
         $entity = new Assets\SimpleEntityWithGenericField();
         $now    = new DateTime();
-        $now->setTimestamp(1522353676);
-        $data = ['genericField' => 1522353676];
+        $now->setTimestamp(1_522_353_676);
+        $data = ['genericField' => 1_522_353_676];
 
         $entity = $this->hydratorByValue->hydrate($data, $entity);
 
@@ -439,8 +439,8 @@ public function testHandleTypeConversionsDate(): void
 
         $entity = new Assets\SimpleEntityWithGenericField();
         $now    = new DateTime();
-        $now->setTimestamp(1522353676);
-        $data = ['genericField' => 1522353676];
+        $now->setTimestamp(1_522_353_676);
+        $data = ['genericField' => 1_522_353_676];
 
         $entity = $this->hydratorByValue->hydrate($data, $entity);