TypeGuard - PHP type validation partly inspired by Ceylon Union and Intersection types

Features

TypeGuard can validate:

• Scalar types: string, integer, etc.:

(new TypeGuard('string'))->match('foo'); // => true

• Object types: ArrayAccess, stdClass, etc.:

(new TypeGuard('stdClass'))->match(new stdClass()); // => true

• Union types: string|integer:

$guard = new TypeGuard('string|integer');
$guard->match('foo'); // => true
$guard->match(1); // => true

• Intersection types: ArrayAccess&Countable:

(new TypeGuard('ArrayAccess&Countable'))->match(new ArrayIterator()); // => true

• Optional types: ?string:

(new TypeGuard('?string'))->match(null); // => true