From: [EMAIL PROTECTED]
Operating system: linux debian 4.0
PHP version: 5.2.5
PHP Bug Type: Unknown/Other Function
Bug description: utf8_decode() provides random output for bad input
Description:
------------
utf8_decode() outputs a random character when supplied with bad input.
When invalid sequences are added, utf8_decoded() usually replace the
sequence with the character "?". But when a lonely highbit character is
present in the end the output seem to be a random character.
Reproduce code:
---------------
for($a=0;$a<20;$a++)printf("%02x ",utf8_decode(chr(0xE0)));
Expected result:
----------------
3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f
(utf8_decode() returns a question mark)
Actual result:
--------------
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
or
09 09 09 09 09 09 09 09 09 09 09 09 09 09 09 09 09 09 09 09
or
05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
or
02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
or some other random value
It seem to differ more with individual runs:
$ for a in `seq 1 20`; do php -r 'printf("%02x
",utf8_decode(chr(0xE0)));';
done
08 00 00 02 00 00 00 00 00 05 00 00 00 05 00 00 07 00 09 00
--
Edit bug report at http://bugs.php.net/?id=43957&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43957&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43957&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43957&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43957&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43957&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43957&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43957&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43957&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43957&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43957&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43957&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43957&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43957&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43957&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43957&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43957&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43957&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43957&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43957&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43957&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43957&r=mysqlcfg
