1--TEST-- 2Aliasing on conflicting method should not cover up conflict. 3--FILE-- 4<?php 5error_reporting(E_ALL); 6 7trait Hello { 8 public function sayHello() { 9 echo 'Hello'; 10 } 11} 12 13trait World { 14 public function sayHello() { 15 echo ' World!'; 16 } 17} 18 19 20class MyClass { 21 use Hello, World { World::sayHello as sayWorld; } 22} 23 24$o = new MyClass(); 25$o->sayHello(); 26$o->sayWorld(); 27 28?> 29--EXPECTF-- 30Fatal error: Trait method World::sayHello has not been applied as MyClass::sayHello, because of collision with Hello::sayHello in %s on line %d 31