1--TEST-- 2Attempt to pass a constant by reference 3--FILE-- 4<?php 5 6function f(&$arg1) 7{ 8 var_dump($arg1++); 9} 10 11f(2); 12 13?> 14--EXPECTF-- 15Fatal error: Uncaught Error: f(): Argument #1 ($arg1) cannot be passed by reference in %s:%d 16Stack trace: 17#0 {main} 18 thrown in %s on line %d 19