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Annotation of embedaddon/php/tests/lang/foreachLoop.010.phpt, revision 1.1

1.1     ! misho       1: --TEST--
        !             2: This test illustrates the impact of invoking destructors when refcount is decremented to 0 on foreach.
        !             3: It 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: $i=0;
        !            26: foreach ($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--
        !            38: int(1)
        !            39: int(2)
        !            40: int(3)