Edit report at https://bugs.php.net/bug.php?id=61529&edit=1
ID: 61529
Updated by: laruence@php.net
Reported by: asserte at gmail dot com
Summary: Make unset() an expression
Status: Verified
Type: Feature/Change Request
Package: Scripting Engine problem
Operating System: Linux
PHP Version: 5.4.1RC/5.5.0-dev
Assigned To: dmitry
Block user comment: N
Private report: N
New Comment:
@nikic thinking of isset, include. :)
Previous Comments:
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[2012-03-29 14:59:27] laruence@php.net
@nikic thinking of isset, include. :)
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[2012-03-29 13:28:04] nikic@php.net
unset() is a statement, not an expression. So you obviously can't use it in an expression
context. Changing buy type to Feature Request.
In my eyes the behavior *should not* be changed. unset() does not have a meaningful return value and
as such should not be allowed in an expression context.
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[2012-03-29 13:07:36] reeze dot xia at gmail dot com
unset() is like echo These are language constuct, Both of them are not
expression in PHP, so code like this:
$c = 1 && echo 3;
IS NOT VALID script too;
Those language construct are "unticked_statement" @see
Zend/zend_language_parser.y.
if,switch, do while and etc they all.
So from now on, This is not a bug.
Maybe we could make unset() a normal expression. I don't know how this decision
made, maybe we can discuss it in maillist.
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[2012-03-29 12:53:18] laruence@php.net
oh, the patch is based on trunk.
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[2012-03-29 12:51:18] laruence@php.net
The following patch has been added/updated:
Patch Name: bug61529.phpt
Revision: 1333025478
URL: https://bugs.php.net/patch-display.php?bug=61529&patch=bug61529.phpt&revision=1333025478
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