1--TEST-- 2Return type covariance in interface implementation 3--FILE-- 4<?php 5interface foo { 6 public function bar() : foo; 7} 8 9 10class qux implements foo { 11 public function bar() : qux { 12 return $this; 13 } 14} 15 16$qux = new qux(); 17echo get_class($qux->bar()); 18 19?> 20--EXPECT-- 21qux 22
