1--TEST-- 2This test illustrates the impact of invoking destructors when refcount is decremented to 0 on foreach. 3It will pass only if the 'contentious code' in PHPValue.decReferences() is enabled. 4--FILE-- 5<?php 6 7$a = array(1,2,3); 8$container = array(&$a); 9 10// From php.net: 11// "Unless the array is referenced, foreach operates on a copy of 12// the specified array and not the array itself." 13// At this point, the array $a is referenced. 14 15// The following line ensures $a is no longer references as a consequence 16// of running the 'destructor' on $container. 17$container = null; 18 19// At this point the array $a is no longer referenced, so foreach should operate on a copy of the array. 20// However, P8 does not invoke 'destructors' when refcount is decremented to 0. 21// Consequently, $a thinks it is still referenced, and foreach will operate on the array itself. 22// This provokes a difference in behaviour when changing the number of elements in the array while 23// iterating over it. 24 25$i=0; 26foreach ($a as $v) { 27 array_push($a, 'new'); 28 var_dump($v); 29 30 if (++$i>10) { 31 echo "Infinite loop detected\n"; 32 break; 33 } 34} 35 36?> 37--EXPECTF-- 38int(1) 39int(2) 40int(3)
