1--TEST-- 2Force pass-by-reference to __call 3--FILE-- 4<?php 5 class C 6 { 7 function __call($name, $values) 8 { 9 $values[0][0] = 'changed'; 10 } 11 } 12 13 $a = array('original'); 14 15 $b = array('original'); 16 $hack =& $b[0]; 17 18 $c = new C; 19 $c->f($a); 20 $c->f($b); 21 22 var_dump($a, $b); 23?> 24--EXPECTF-- 25array(1) { 26 [0]=> 27 string(8) "original" 28} 29array(1) { 30 [0]=> 31 &string(7) "changed" 32} 33