symfony/UPGRADE-4.3.md

UPGRADE FROM 4.2 to 4.3

BrowserKit

• Marked Response final.
• Deprecated Response::buildHeader()
• Deprecated Response::getStatus(), use Response::getStatusCode() instead

Cache

• The psr/simple-cache dependency has been removed - run composer require psr/simple-cache if you need it.
• Deprecated all PSR-16 adapters, use Psr16Cache or Symfony\Contracts\Cache\CacheInterface implementations instead.
• Deprecated SimpleCacheAdapter, use `Psr16Adapter instead.

Config

• Deprecated using environment variables with cannotBeEmpty() if the value is validated with validate()

Form

• Using names for buttons that do not start with a letter, a digit, or an underscore is deprecated and will lead to an exception in 5.0.
• Using names for buttons that do not contain only letters, digits, underscores, hyphens, and colons is deprecated and will lead to an exception in 5.0.
• Using the date_format, date_widget, and time_widget options of the DateTimeType when the widget option is set to single_text is deprecated.

FrameworkBundle

• Not passing the project directory to the constructor of the AssetsInstallCommand is deprecated. This argument will be mandatory in 5.0.
• Deprecated the "Psr\SimpleCache\CacheInterface" / "cache.app.simple" service, use "Symfony\Contracts\Cache\CacheInterface" / "cache.app" instead.

HttpFoundation

• The MimeTypeGuesserInterface and ExtensionGuesserInterface interfaces have been deprecated, use Symfony\Component\Mime\MimeTypesInterface instead.
• The MimeType and MimeTypeExtensionGuesser classes have been deprecated, use Symfony\Component\Mime\MimeTypes instead.
• The FileBinaryMimeTypeGuesser class has been deprecated, use Symfony\Component\Mime\FileBinaryMimeTypeGuesser instead.
• The FileinfoMimeTypeGuesser class has been deprecated, use Symfony\Component\Mime\FileinfoMimeTypeGuesser instead.