#26662 [Opn]: Inconsistency in variable setting allows variables that start with numbers

From: Date: Fri, 19 Dec 2003 03:05:24 +0000
Subject: #26662 [Opn]: Inconsistency in variable setting allows variables that start with numbers
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-52281@lists.php.net to get a copy of this message 
 ID:               26662
 Updated by:       davey@php.net
 Reported By:      alindeman@php.net
 Status:           Open
 Bug Type:         Scripting Engine problem
 Operating System: Linux
 PHP Version:      4CVS-2003-12-18 (stable)
 New Comment:

Both the FBSD and Win32 crashes are attributeable to the xdebug
extension. Am filing a bug with the author on those. Please disregard
those issues here.

- Davey


Previous Comments:
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[2003-12-18 21:51:46] alindeman@php.net

This is not a dup, as it is not fixed in PHP 5.  Re-opening.

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[2003-12-18 21:42:28] iliaa@php.net

Please do not submit the same bug more than once. An existing
bug report already describes this very problem. Even if you feel
that your issue is somewhat different, the resolution is likely
to be the same. 

Thank you for your interest in PHP.

Dupe of bug #26601 which is marked won't fix.

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[2003-12-18 21:29:16] davey@php.net

Verified on PHP5b2, FreeBSD 4.4.

PHP4 Snapshot on FreeBSD 4.4 yields this:
[davey@omestre:~/php4-STABLE-200312190030/sapi/cli]$ ./php -r '${1} =
"foo"; echo ${1}, "\n";'
Segmentation fault (core dumped)

Running the script on Win32 PHP4 snapshot (same one) gives an
"Application Error".

------------------------------------------------------------------------

[2003-12-18 21:25:21] john@php.net

Confirmed this bug is in PHP 5 B3RC1 as well. It gets worse, you can
put whatever you want in ${} and it'll take it just fine...

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[2003-12-18 21:06:52] alindeman@php.net

Description:
------------
It is possible to set variables that start with numbers.

I reproduced this with a PHP 4.3.x-dev snapshot AND PHP 5.0.0b2 (I was
unable to get a snap to compile.  autoconf errors out the wazoo).

Reproduce code:
---------------
andrew@laptop cli $ ./php -r '${1} = "foo"; echo ${1}, "\n";'
foo

Expected result:
----------------
A parse error

Actual result:
--------------
Outputs 'foo'


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