Req #55493 [Asn]: Superglobal variable variables with ${expression} in non-global scope

Edit report at https://bugs.php.net/bug.php?id=55493&edit=1 ID: 55493 Updated by: johannes@php.net Reported by: vovan-ve at yandex dot ru Summary: Superglobal variable variables with ${expression} in non-global scope Status: Assigned Type: Feature/Change Request Package: Variables related Operating System: Windows XP SP3 PHP Version: 5.3.7 Assigned To: dmitry Block user comment: N Private report: N New Comment: Mind that even when when this special case is treated it still won't work with get_defined_vars() and others. I think the current behavior can be documented in the clearest way giving the least confusion ... so I would not implement it. Previous Comments: ------------------------------------------------------------------------ [2011-08-24 14:34:30] vovan-ve at yandex dot ru Programmers, who use variable variable, dooms themself to slowdown performance at any way due to calculation of the expressions. They won't see the difference, I think. ------------------------------------------------------------------------ [2011-08-24 14:00:39] vovan-ve at yandex dot ru But what about SUPERglobal? In fact they are almost superglobal :) ------------------------------------------------------------------------ [2011-08-24 13:54:34] laruence@php.net +1 for dmitry ------------------------------------------------------------------------ [2011-08-24 13:04:22] dmitry@php.net ZE decides if a variable have to be fetched from the global scope at compile time checking predefined list of super-global variables. The variable fetching by name (e.g. $$name) is always done from local scope. Of course it's possible to extend executor to check for list of super-global variables at run-time, but it'll introduce significant slowdown for each fetch by name. I really don't like it. ------------------------------------------------------------------------ [2011-08-24 12:50:02] laruence@php.net In this case, I make a patch for this, and the test result can be found on: http://pastebin.com/6pTuLEer ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=55493 -- Edit this bug report at https://bugs.php.net/bug.php?id=55493&edit=1