Hello Symfony 4!

November 30, 2017 • Published by Ryan Weaver

It's here! I am beyond excited to welcome today's release of Symfony 4! This is not just a new major version: it's an entirely reimagined developer experience. You will love working with Symfony 4:

Automated package installation with Symfony Flex
Auto-registered & autowired services to keep you coding, not configuring
Micro: a new Symfony 4 app is 70% smaller than Symfony 3. Symfony is a micro-framework out-of-the-box!
Performance: We've optimized and re-optimized every part of Symfony (benchmark #1, benchmark #2, benchmark #3)
Conventions: A Symfony 4 app has a smaller directory structure, less "Symfony-ideas" and uses more standard ideas.

And so many more features, including the MakerBundle for code generation and Webpack Encore for professional frontend assets.

Ready to get started! Just run:

$ composer create-project symfony/skeleton my_project

And then follow the Setup Documentation. Have fun!

An Immense Community Effort

I want to thank the many people who contributed to this huge effort, which included 3,000 commits from more than 300 people over just the past year on the Symfony repository. The documentation has also been overhauled with over 25k lines changed in the last six months! Thanks to the passion from the community, Symfony is truly in a Renaissance.

Let's Upgrade!

For existing users, as always, thanks to the Backwards Compatibility Promise and continuous upgrade path (i.e. upgrading a major version is easy), you'll be able to migrate your apps to the new version, safely, and at your own pace. See the UPGRADE log for details on changes.

The biggest change (which is optional) is to move your project to the new Symfony 4 directory structure so that you can take advantage of Symfony Flex. For details, read Upgrading Existing Applications to Flex. We'll continue updating that page to contain the easiest and safest ways to upgrade.

Also many of the community bundles have already been updated and will work on your Symfony 4 application. But, we're still working to add support everywhere.

Published in #Symfony

Help the Symfony project!

As with any Open-Source project, contributing code or documentation is the most common way to help, but we also have a wide range of sponsoring opportunities.

Comments

Fabien Potencier Certified said on Nov 30, 2017 at 19:42

Congrats everyone. Symfony 4 is a great release, probably the best ever... Very proud of what the community achieved during the last year.

Mohammad Ghanbari said on Nov 30, 2017 at 19:58

Awesome work.

Ghost said on Nov 30, 2017 at 20:07

Well done everyone, your hard work is greatly appreciated and long may it continue!

Tomas Votruba said on Nov 30, 2017 at 20:14

Great job everyone, happy to be near this project on it's every milestone!

Mike Kozhevnikov said on Nov 30, 2017 at 20:21

Congrats, thx :)

Alex Rock Certified said on Nov 30, 2017 at 20:25

Congratulations to all core and community members for such lovely tools for us passionate developers ♥ ❤

Tony133 said on Nov 30, 2017 at 20:36

Compliments! It will be the best symfony always!

Aymen Fersi said on Nov 30, 2017 at 20:44

Awesome !

Hossam Magdy said on Nov 30, 2017 at 21:06

Awesome, and amazing benchmarks!
I am a big fan of Symfony, and its conferences (especially the ones with RyanWeaver talk).

Dennis Smink said on Nov 30, 2017 at 21:07

#10

Got my first project plannen already! Great job everyone!

Timon Fiddike geb. Schroeter said on Nov 30, 2017 at 21:13

#11

Yeah!!!

Big thank you to everybody who helped make this happen!

Looking forward to upgrading Retromat from 3.3 to 3.4, then 4.0 as soon as possible :-D

khaled hadj a said on Nov 30, 2017 at 21:15

#12

GOOD JOB , is there possibility to use middlewares as expressive, relay

Brian Debuire said on Nov 30, 2017 at 22:22

#13

Awesome!!! Congratulations to the team and the community! Symfony4 is for sure the BEST SO FAR!!! Cheers!

Alex Rock Certified said on Nov 30, 2017 at 22:30

#14

@khaled middleware pattern can be implemented directly in the EventDispatcher if you need, with the provided Kernel events as entrypoints ;)

Romain Gautier Certified said on Nov 30, 2017 at 22:39

#15

Bravo !
Can't wait to play with it on many and many projects 😁

Aurelien Morvan said on Nov 30, 2017 at 22:41

#16

Great job ! :)

Guillermo Bonino said on Nov 30, 2017 at 22:54

#17

Congratulations!!!

Aleksandr Zamiatin said on Nov 30, 2017 at 23:57

#18

nice!

Dennis Fridrich said on Dec 1, 2017 at 00:02

#19

Great job! Flex is as faboulous as Symfony :-)

ChunpengLI said on Dec 1, 2017 at 00:40

#20

Great job!

Erlang Parasu said on Dec 1, 2017 at 01:02

#21

Great!

Ryan Lim said on Dec 1, 2017 at 01:19

#22

Great job ! :)

Guillaume Loulier Certified said on Dec 1, 2017 at 06:58

#23

Really great job, can't wait to use Symfony 4 in production! :)

Maksim Kotlyar said on Dec 1, 2017 at 07:10

#24

Congrats! Looking forward to using it!

Arkounay said on Dec 1, 2017 at 07:38

#25

Nice! Will the standard edition be updated too ? (the one with default bundles included). Otherwise don't you think it might be tough for newcomers to get started?

jeremyFreeAgent — Jérémy Romey Certified said on Dec 1, 2017 at 09:07

#26

L'amour................

David Gorges said on Dec 1, 2017 at 09:10

#27

Congratulations! Great release with amazing features.

Artem Ostretsov said on Dec 1, 2017 at 09:15

#28

Thanks to all contributors!

Nelson Kopliku said on Dec 1, 2017 at 16:56

#29

Great! I love it!

Tobias Schmidt said on Dec 1, 2017 at 17:29

#30

Nice! I'm really looking forward to work with it!

Mimo Camussi said on Dec 1, 2017 at 18:01

#31

Awesome! Thanks to all.

Ryan Weaver Certified said on Dec 1, 2017 at 18:37

#32

@Antonin The standard edition will not be updated: Flex is *the* way to go. And Flex is way smaller and easier. But yea, I think we will discover and implement some improvements in the future, to make sure that it's very clear and easy for beginners to find and install the stuff they need :). I was just talking about this yesterday with dunglas.

Have fun everyone! And if you see any bugs in the docs, please let us know! We made HUGE changes there!

Thomas Cuvillier said on Dec 1, 2017 at 22:20

#33

Very excited to check it out, good job all ;)

ABHISHEK SHRIVASTAVA said on Dec 2, 2017 at 12:38

#34

Congrats Team Symfony for such a great release.

Julien Anest said on Dec 2, 2017 at 15:48

#35

Hi. @Ryan Does it mean there is a "standard" official flex receipe planned in order to replace the use of the standard edition ?

Steevan BARBOYON said on Dec 2, 2017 at 19:43

#36

Symfony 4 wants to be faster than older versions, what benchmarks will say about it ?

See results and compare Symfony 4 with older versions here : http://www.phpbenchmarks.com/fr/benchmark/apache-bench/php-7.1/select-version/symfony.html

UCHA CHILACHAVA said on Dec 4, 2017 at 08:43

#37

Love micro framework approach. Congratulations !

Muzafar Ali said on Dec 4, 2017 at 08:43

#38

Looking forward to starting a new project with Symfony 4 (Flex)..

Michael COULLERET said on Dec 4, 2017 at 08:45

#39

Great job !

V. K. said on Dec 4, 2017 at 10:08

#40

It's really huge milestone in history of symfony.

Peter MOUEZA said on Dec 4, 2017 at 10:50

#41

Thanks for your great work !

Mehdi Chaouch said on Dec 4, 2017 at 10:55

#42

Awesome! Congratulations

Pablo Veintimilla said on Dec 5, 2017 at 18:22

#43

Great job! Felicitaciones!

redouane sehbani said on Dec 20, 2017 at 20:36

#44

thanks to the community of symfony for his great work

Foxtrot said on Dec 31, 2017 at 13:38

#45

Thanks for all the great work! One thing-- Sf4 really needs a standard edition or some example layout instructions. It is going to be impossible for new users to get to Hello World from a database.

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