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de80e3ce4b
foreach only allowed variables to be traversed by reference. This never
really made sense because
a) Expressions like array(&$a, &$b) can be meaningfully iterated by-ref
b) Function calls can return by-ref (so they can also be meaningfully
iterated)
c) Iterators could at least in theory also be iterated by-ref (not
sure if any iterator makes use of this)
With by-ref generators the restriction makes even less sense, so I removed
it altogether.
43 lines
527 B
PHP
43 lines
527 B
PHP
--TEST--
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Generators can yield by-reference
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--FILE--
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<?php
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function &iter(array &$array) {
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foreach ($array as $key => &$value) {
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yield $key => $value;
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}
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}
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$array = [1, 2, 3];
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$iter = iter($array);
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foreach ($iter as &$value) {
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$value *= -1;
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}
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var_dump($array);
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$array = [1, 2, 3];
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foreach (iter($array) as &$value) {
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$value *= -1;
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}
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var_dump($array);
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?>
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--EXPECT--
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array(3) {
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[0]=>
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int(-1)
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[1]=>
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int(-2)
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[2]=>
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&int(-3)
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}
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array(3) {
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[0]=>
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int(-1)
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[1]=>
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int(-2)
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[2]=>
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&int(-3)
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}
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