1--TEST-- 2Successful inheritance with multiple complex dependencies on one class 3--FILE-- 4<?php 5 6spl_autoload_register(function ($class) { 7 if ($class == 'A') { 8 class A 9 { 10 function m(): B {} 11 function m2(): B {} 12 } 13 var_dump(new A); 14 } elseif ($class == 'B') { 15 class B extends A 16 { 17 function m(): X {} 18 function m2(): Y {} 19 } 20 var_dump(new B); 21 } elseif ($class == 'X') { 22 class X extends B {} 23 var_dump(new X); 24 } else { 25 class Y extends B {} 26 var_dump(new Y); 27 } 28}); 29 30new B; 31 32?> 33--EXPECT-- 34object(A)#2 (0) { 35} 36object(Y)#2 (0) { 37} 38object(X)#2 (0) { 39} 40object(B)#2 (0) { 41} 42