1--TEST-- 2RFC example: cannot return null with a return type declaration 3--FILE-- 4<?php 5function foo(): DateTime { 6 return null; 7} 8 9foo(); 10--EXPECTF-- 11Fatal error: Uncaught TypeError: Return value of foo() must be an instance of DateTime, null returned in %s:%d 12Stack trace: 13#0 %s(%d): foo() 14#1 {main} 15 thrown in %s on line %d 16
