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41 lines
1.2 KiB
PHP
41 lines
1.2 KiB
PHP
--TEST--
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This test illustrates the impact of invoking destructors when refcount is decremented to 0 on foreach.
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It will pass only if the 'contentious code' in PHPValue.decReferences() is enabled.
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--FILE--
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<?php
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$a = array(1,2,3);
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$container = array(&$a);
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// From php.net:
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// "Unless the array is referenced, foreach operates on a copy of
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// the specified array and not the array itself."
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// At this point, the array $a is referenced.
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// The following line ensures $a is no longer references as a consequence
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// of running the 'destructor' on $container.
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$container = null;
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// At this point the array $a is no longer referenced, so foreach should operate on a copy of the array.
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// However, P8 does not invoke 'destructors' when refcount is decremented to 0.
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// Consequently, $a thinks it is still referenced, and foreach will operate on the array itself.
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// This provokes a difference in behaviour when changing the number of elements in the array while
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// iterating over it.
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$i=0;
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foreach ($a as $v) {
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array_push($a, 'new');
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var_dump($v);
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if (++$i>10) {
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echo "Infinite loop detected\n";
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break;
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}
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}
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?>
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--EXPECT--
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int(1)
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int(2)
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int(3)
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