1--TEST-- 2Adding a return type during inheritance is allowed 3--FILE-- 4<?php 5 6interface One { 7 public function a(); 8 public function b(); 9 public function c(); 10 public function d(); 11} 12 13interface Two extends One { 14 public function a() : stdClass; 15 public function c() : callable; 16 public function b() : array; 17 public function d() : int; 18} 19 20?> 21Done 22--EXPECT-- 23Done 24