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27 lines
646 B
PHP
27 lines
646 B
PHP
--TEST--
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SplDoublyLinkedList Iterating a DLL by reference shouldn't be permitted
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--CREDITS--
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Mark Baker mark@lange.demon.co.uk at the PHPNW2017 Conference for PHP Testfest 2017
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--FILE--
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<?php
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$dll = new SplDoublyLinkedList();
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$dll->push(2);
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$dll->push(3);
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try {
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foreach($dll as $key => &$value) {
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// We should never see this output, because the "by reference" exception should be thrown in the previous line
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echo $value, PHP_EOL;
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$value *= $value;
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echo $value, PHP_EOL;
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}
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} catch (Exception $e) {
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echo $e->getMessage(), PHP_EOL;
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}
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?>
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--EXPECT--
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An iterator cannot be used with foreach by reference
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