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<?php namespace Generics; class CollectionᐸTᐳ implements \Countable { private $items = []; public function add(T $item) { $this->items[] = $item; } public function count() { return count($this->items); } } $dates = new CollectionᐸDateTimeᐳ(); $dates->add(new DateTime('yesterday')); $dates->add(new DateTime('today')); $dates->add(new DateTime('tomorrow')); echo count($dates); class T extends \DateTime {} class DateTime extends T {}; class CollectionᐸDateTimeᐳ extends CollectionᐸTᐳ {}
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Generics\CollectionᐸTᐳ::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/0f4HL on line 14 Fatal error: Uncaught Error: Class "Generics\CollectionᐸDateTimeᐳ" not found in /in/0f4HL:20 Stack trace: #0 {main} thrown in /in/0f4HL on line 20
Process exited with code 255.

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