Req #72563 [Opn]: @unset() return error

Edit report at https://bugs.php.net/bug.php?id=72563&edit=1 ID: 72563 Updated by: kalle@php.net Reported by: security at nsa dot gov Summary: @unset() return error Status: Open Type: Feature/Change Request Package: Scripting Engine problem Operating System: Windows PHP Version: 7.0.8 Block user comment: N Private report: N New Comment: @requinix I agree that we should perhaps allow the silence operator to operate on language constructs, or at least allow line 16 of your example (unset(@$...)), since we already allow to silence individual variables or calls like: call_something(@$hopefully_callable); Previous Comments: ------------------------------------------------------------------------ [2016-07-08 07:29:45] requinix@php.net @ is only allowed with expressions and unset is considered a statement, like control structures and return. It is possible for unset(expr) to raise an error <https://3v4l.org/idvWY>, and it looks like @ is implemented as a begin/execute/end sequence rather than a "silence the next expression" operation, so maybe @ could be promoted to support statements too? Code like @foreach ($array as $var) { looks a bit odd, but I can't think of any reason why it should specifically not be supported. (Putting aside the general "don't use the error suppression operator" advice, that is.) ------------------------------------------------------------------------ [2016-07-08 05:50:17] security at nsa dot gov Description: ------------ If I use @ to supress error, PHP failed to parse @unset. Test script: --------------- <?php $a='aaa'; @unset($a); ?> Expected result: ---------------- No error Actual result: -------------- Erros parsing ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72563&edit=1