如何解决PHP类型检查的复杂问题？使用spatie/better-types库可以！

composer require spatie/better-types

function (FooInterface $foo) {}

$reflectionType = …

$type = new Type($reflectionType);

$type->accepts(new Foo()); // true
$type->accepts('invalid string'); // false

function (?FooInterface $foo, ?BarInterface $bar) {}

$reflectionMethod = …

$method = new Method($reflectionMethod);

$method->accepts(new Foo(), new Bar()); // true
$method->accepts(bar: new Bar(), foo: new Foo()); // true
$method->accepts(null, new Bar()); // true
$method->accepts(null, null); // true

$method->accepts('string', 1); // false
$method->accepts(new Foo()); // false, 不能省略参数

class Foo
{
    public function acceptsString(string $a) {}

    public function acceptsStringToo(string $a) {}

    public function acceptsInt(int $a) {}
}

$reflectionClass = …

$handlers = new Handlers($reflectionClass);

$handlers->accepts('string')->all(); // ['acceptsString', 'acceptsStringToo']
$handlers->accepts(1)->first(); // 'acceptsInt'

Attributes::new(AttributesTestClass::class)
    ->instanceOf(AttributesTestAttribute::class)
    ->first();