UPGRADE FROM 7.2 to 7.3

Symfony 7.3 is a minor release. According to the Symfony release process, there should be no significant backward compatibility breaks. Minor backward compatibility breaks are prefixed in this document with [BC BREAK], make sure your code is compatible with these entries before upgrading. Read more about this in the Symfony documentation.

If you're upgrading from a version below 7.1, follow the 7.2 upgrade guide first.

Console

Omitting parameter types in callables configured via Command::setCode method is deprecated

Before

$command->setCode(function ($input, $output) {
    // ...
});

After

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

$command->setCode(function (InputInterface $input, OutputInterface $output) {
    // ...
});

Deprecate methods Command::getDefaultName() and Command::getDefaultDescription() in favor of the #[AsCommand] attribute

FrameworkBundle

Not setting the framework.property_info.with_constructor_extractor option explicitly is deprecated because its default value will change in version 8.0
Deprecate the --show-arguments option of the container:debug command, as arguments are now always shown

Serializer

Deprecate the CompiledClassMetadataFactory and CompiledClassMetadataCacheWarmer classes

Validator

Deprecate defining custom constraints not supporting named arguments

Before:

use Symfony\Component\Validator\Constraint;

class CustomConstraint extends Constraint
{
    public function __construct(array $options)
    {
        // ...
    }
}

After:

use Symfony\Component\Validator\Attribute\HasNamedArguments;
use Symfony\Component\Validator\Constraint;

class CustomConstraint extends Constraint
{
    #[HasNamedArguments]
    public function __construct($option1, $option2, $groups, $payload)
    {
        // ...
    }
}

Deprecate passing an array of options to the constructors of the constraint classes, pass each option as a dedicated argument instead

Before:

new NotNull([
    'groups' => ['foo', 'bar'],
    'message' => 'a custom constraint violation message',
])

After:

new NotNull(
    groups: ['foo', 'bar'],
    message: 'a custom constraint violation message',
)

TypeInfo

Deprecate constructing a CollectionType instance as a list that is not an array
Deprecate the third $asList argument of TypeFactoryTrait::iterable(), use TypeFactoryTrait::list() instead

VarDumper

Deprecate ResourceCaster::castCurl(), ResourceCaster::castGd() and ResourceCaster::castOpensslX509()
Mark all casters as @internal