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

Config

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

FrameworkBundle

• Not passing the project directory to the constructor of the AssetsInstallCommand is deprecated. This argument will be mandatory in 5.0.

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.