#24218 [NEW]: mb_convert_encoding weirdness

[mark at lange dot demon dot co dot uk]

From:             mark at lange dot demon dot co dot uk
Operating system: Win32
PHP version:      4.3.2
PHP Bug Type:     mbstring related
Bug description:  mb_convert_encoding weirdness

Description:
------------
A piece of code that was working perfectly correctly with PHP version
4.2.3 is now displaying erroneous characters for PHP 4.3.2.

The script in question is a translation form, displaying two languages
which may use different charsets.
The code determines the appropriate charset to use for the html header
from the two languages. If the charsets are the same, no problem. If they
are different, it tests whther the mbstring module is enabled, in which
case it uses 'UTF-8' for the html header; otherwise it uses the charset
for the second language.

If mbstring was enabled, then the code uses the mb_convert_encoding
function to convert the text strings for display to UTF-8...


Reproduce code:
---------------
$basecharset =  'ISO-8859-1';
$charset = 'ISO-8859-2';

$convertcharsets = ($basecharset != $charset);
if ($convertcharsets) {
   if (function_exists('mb_convert_encoding')) {
      formheader('UTF-8');
   } else {
      $convertcharsets = false;
      formheader($charset);
   }
} else {
   formheader($basecharset);
}

echo charsetText('Français',$convertcharset,$basecharset)
echo '<br />';
echo charsetText('Polska',$convertcharset,$charset)
echo '<br />';

function charsetText($text,$convertcharset,$fromcharset)
{
   $returntext = $text;
   if ($convertcharset) { $returntext =
mb_convert_encoding($returntext,"UTF-8",$fromcharset); }
   return $returntext;
} // function charsetText()


Expected result:
----------------
Français
Polska



Actual result:
--------------
FranÃ&sect;ais
Polska

The first odd character in FranXXais is A with a tilde; the second is the
HTML &sect; character

-- 
Edit bug report at http://bugs.php.net/?id=24218&edit=1
-- 
Try a CVS snapshot:         http://bugs.php.net/fix.php?id=24218&r=trysnapshot
Fixed in CVS:               http://bugs.php.net/fix.php?id=24218&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=24218&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=24218&r=needtrace
Try newer version:          http://bugs.php.net/fix.php?id=24218&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=24218&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=24218&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=24218&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=24218&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=24218&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24218&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=24218&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=24218&r=isapi
Install GNU Sed:            http://bugs.php.net/fix.php?id=24218&r=gnused