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Bug #20261 str_rot13() changes too much
Submitted: 2002-11-05 09:55 UTC Modified: 2002-11-05 10:05 UTC
From: jeroen at unfix dot org Assigned:
Status: Closed Package: Strings related
PHP Version: 4.2.3 OS: Linux (at least)
Private report: No CVE-ID: None
 [2002-11-05 09:55 UTC] jeroen at unfix dot org
a) str_rot13() changes it's given variable.
b) str_rot13() changes OTHER variables.

8<----------------------------
$ cat test.php
<?php
 $first = "boo";
 $second = $first;
 $rot = "";

 echo "1: ".$first."\n";
 echo "2: ".$second."\n";
 echo "3: ".$rot."\n";

 $rot = str_rot13($second);

 echo "1: ".$first."\n";
 echo "2: ".$second."\n";
 echo "3: ".$rot."\n";
?>
--------------------------->8

8<-----------------------
$ php4 -q test.php
1: boo
2: boo
3:
1: obb
2: obb
3: obb
----------------------->8

The changing of 1 is quite odd (subbug B) and very annoying.
The changing of 2 is probably because it happens in place.

Either way $first shouldn't be touched at all.

This is on Debian Linux/unstable, but others are probably affected too.

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 [2002-11-05 10:05 UTC] sander@php.net
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 http://snaps.php.net/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites in short time.
 
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