Upgrading & What's New in Symfony 5!

Symfony 5 is here! Newer & shinier... of course! But exactly what is new?

Symfony 5 builds on top of the shoulders of Symfony 4. It doesn't completely change any directory structures or add any ground-breaking new way of developing. But it does come with some key new features to make life easier. Let's upgrade... then try some of those out. We'll cover:

• composer.json & extra.symfony.require
• Upgrading to Symfony 4.4
• New Flex commands for updating recipes
• Updating all the most important recipes
• Finding & Removing deprecations
• Upgrading to Symfony 5
• New secrets management
• Auto-validation
• The new PHP 7.4 "preload" file
• Using "migrate_from" to migrate your hashed passwords for max security
• bin/console lint:container

And these are just my favorite features (see Symfony.com 4.4/5.0 Features Blog for even more). Let's get to work!

• Flex, Versioning & extra.symfony.require
• Managing Flex, extra.symfony.require & Version Constraints
• Upgrading to Symfony 4.4
• Selectively Committing Recipe Updates
• Upgrading Recipes: New Commands!
• Recipe Upgrade: symfony/console & bootstrap.php
• Upgrading the FrameworkBundle Recipe (Part 1)
• FrameworkBundle Recipe Part 2: The Kernel Class
• Updating the TwigBundle Recipe
• Updating the Mailer Recipe(s)
• phpunit-bridge & routing Recipes
• Updating security, translation & validator Recipes
• Updating the webpack-encore-bundle Recipe
• Fixing the First Deprecations
• Upgrading KnpPaginatorBundle & PHP Platform Version
• Upgrading/Migrating from StofDoctrineExtensions
• Upgrading to DoctrineBundle 2.0
• DoctrineBundle Updates & Recipe Upgrade
• Fixing our Deprecations: Form, Controller & Mailer
• Hunting the Final Deprecations
• Upgrading to Symfony 5.0
• Secrets Management Setup
• Production Secrets
• Overriding Secrets Locally (Local Vault)
• Prod Vault Optimization & Vault for Tests
• Validation Auto-Mapping
• Migrate Password Hashing
• PHP 7.4 preload
• Is your Container Running? Catch It! lint:container