The TypeInfo component extracts PHP types information.
composer require symfony/type-info
composer require phpstan/phpdoc-parser # to support raw string resolving<?php
use Symfony\Component\TypeInfo\Type;
use Symfony\Component\TypeInfo\TypeIdentifier;
use Symfony\Component\TypeInfo\TypeResolver\TypeResolver;
// Instantiate a new resolver
$typeResolver = TypeResolver::create();
// Then resolve types for any subject
$typeResolver->resolve(new \ReflectionProperty(Dummy::class, 'id')); // returns an "int" Type instance
$typeResolver->resolve('bool'); // returns a "bool" Type instance
// Types can be instantiated thanks to static factories
$type = Type::list(Type::nullable(Type::bool()));
// Type classes have their specific methods
Type::object(FooClass::class)->getClassName();
Type::enum(FooEnum::class, Type::int())->getBackingType();
Type::list(Type::int())->isList();
// Every type can be cast to string
(string) Type::generic(Type::object(Collection::class), Type::int()) // returns "Collection<int>"
// You can check that a type (or one of its wrapped/composed parts) is identified by one of some identifiers.
$type->isIdentifiedBy(Foo::class, Bar::class);
$type->isIdentifiedBy(TypeIdentifier::OBJECT);
$type->isIdentifiedBy('float');
// You can also check that a type satifies specific conditions
$type->isSatisfiedBy(fn (Type $type): bool => !$type->isNullable() && $type->isIdentifiedBy(TypeIdentifier::INT));