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Symfony 6.0 and 5.4 have the same new features because both were released at the same time. Learn more about the Symfony release process.
New in Symfony 5.4: Misc. features (part 3)
Symfony 5.4 allows using longer RateLimiter intervals, simplifies the creation of constraint errors, allows to lock files when appending to them and introduces a PhpStan extractor for PropertyInfo.
New in Symfony 5.4: Misc. features (part 2)
Symfony 5.4 adds new methods to DomCrawler, improves gitignore support in Finder and introduces a new command to debug env vars.
New in Symfony 5.4: Misc. features (part 1)
Symfony 5.4 adds a new strict mode for assets, new options for YAML liner, some UX improvements in error pages, a new Nil ULID class and new string functions.
New in Symfony 5.4: Serializer improvements
Symfony 5.4 allows to configure the serializer globally, to use your own serializer for Messenger and to collect all denormalization errors related to PHP types.
New in Symfony 5.4: Notifier integrations
Symfony 5.4 adds new integrations for the Notifier component: sms77, smsc.ru, Mailjet, Telnyx, MessageMedia, Yunpian, Amazon SNS, TurboSMS and Expo Notification.
New in Symfony 5.4: Profiler improvements
In Symfony 5.4 you can enable the profiler conditionally, you can see more security-related information in the profiler and you can even preview the rendered HTML emails.
New in Symfony 5.4: Messenger Improvements
Symfony 5.4 adds the option to configure handlers with PHP attributes, adds a new way to get worker metadata, allows to reset container services between messages and allows you to handle messages in batches.
New in Symfony 5.4: DependencyInjection Improvements
Symfony 5.4 adds features such as autowiring of union and intersection types, improved TaggedIterator and TaggedLocator attributes and autoconfiguration of methods and properties.
New in Symfony 5.4: Translation Improvements
In Symfony 5.4 you can use translatable objects for form help and for translation parameters. In addition, translation messages now integrates with GitHub Actions.
New in Symfony 5.4: Language Negotiation
Symfony 5.4 adds new config options to better handle the Accept-Language HTTP header in your applications.