Edit report at https://bugs.php.net/bug.php?id=55493&edit=1
ID: 55493
Comment by: good821 at 126 dot com
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
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Previous Comments:
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[2011-08-26 23:09:57] [email protected]
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.
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[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.
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[2011-08-24 14:00:39] vovan-ve at yandex dot ru
But what about SUPERglobal? In fact they are almost superglobal :)
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[2011-08-24 13:54:34] [email protected]
+1 for dmitry
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[2011-08-24 13:04:22] [email protected]
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.
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