<?php
function f1(&$v) {}
function f2() {$a = array(1,2,3); return $a; }
// Both are Fatal error: Only variables can be passed by reference
f1((array)f2());
f1(array(f2()));
Fatal error: Uncaught Error: f1(): Argument #1 ($v) could not be passed by reference in /in/Ob1o2:6
Stack trace:
#0 {main}
thrown in /in/Ob1o2 on line 6
Process exited with code 255.
Output for 8.1.23 - 8.1.33, 8.2.10 - 8.2.29
Fatal error: Uncaught Error: f1(): Argument #1 ($v) cannot be passed by reference in /in/Ob1o2:6
Stack trace:
#0 {main}
thrown in /in/Ob1o2 on line 6
Process exited with code 255.