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Bug #22592 Cascading assignments to strings with curly braces broken
Submitted: 2003-03-07 11:40 UTC Modified: 2003-07-24 15:14 UTC
Avg. Score:4.4 ± 0.9
Reproduced:15 of 16 (93.8%)
Same Version:7 (46.7%)
Same OS:8 (53.3%)
From: matteo at beccati dot com Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 5.0.0b2-dev OS: *
Private report: No CVE-ID:
 [2003-03-07 11:40 UTC] matteo at beccati dot com
When using cascading assignments to strings and curly braces, to change characters within strings, only the last character is changed to the right value. Other characters become NUL (0x00).

$wrong = $correct = 'abcdef';

$correct{1} = '*';
$correct{3} = '*';
$correct{5} = '*';

// This produces the 
$wrong{1} = $wrong{3} = $wrong{5} = '*';

echo $correct."\n".$wrong."\n\n";
echo urlencode($correct)."\n"."\n".urlencode($wrong)."\n";


The resulting output is:



I also tested it on a old PHP 4.2.0-dev, and it gives the same result.


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 [2003-03-07 12:13 UTC]
Happens also with 4.3.2-dev. (from today)

 [2003-03-10 13:35 UTC]
Update version
 [2003-06-16 10:44 UTC]
This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot at
In case this was a documentation problem, the fix will show up soon at

In case this was a website problem, the change will show
up on the site and on the mirror sites in short time.
Thank you for the report, and for helping us make PHP better.

Fixed in ZE2. 
 [2003-06-17 10:51 UTC]
Also fixed in PHP 4.3.3-dev (latest STABLE snapshot..)

 [2003-07-17 17:11 UTC]
Reopen since it leaks now
 [2003-07-18 07:48 UTC]
Doesn't leak in PHP 4.3.3RC2-dev. (only PHP 5)

 [2003-07-24 15:14 UTC]
Marcus, report the leak in separate bug report.

 [2009-09-21 13:32 UTC]
Automatic comment from SVN on behalf of dmitry
Log: Fixed tests/lang/bug22592.phpt
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