Description:
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Using imagettftext some Bengali unicode text that combines characters (uses diacritics) doesn't render properly: it displays too many characters. Maybe the same as this (ancient) post: http://www.mail-archive.com/php-general@lists.php.net/msg78902.html. I'm afraid I can't find a free unicode Bengali font - I used MS Arial Unicode. I've made a zip file with a screenshot and the repro code (in case the UTF-8 string literal screws up on the way to your database;) that's available at http://cl-t199-020cl.privatedns.com/repro.zip.

Reproduce code:
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<?
header('Content-type: text/html; charset=utf-8');
if (!mb_internal_encoding("UTF-8"))
	p_echo("couldn't set internal encoding to utf-8");

$string="&#2459;&#2494;&#2468;&#2509;&#2480; &#2476;&#2495;&#2453;&#2509;&#2487;&#2507;&#2477;&#2503;&#2480;";
$text_size=12;

$im = imagecreate(15*$text_size,$text_size);
imagecolorallocate($im,255,255,255); //bg colour
$black=imagecolorallocate($im,0,0,0); //fg colour

imagettftext($im, $text_size, 0, 0, $text_size, $black, "arialuni.ttf", $string);
imagegif($im, "repro.gif");

echo($string."<br>");
echo("<img src=\"repro.gif\">");
?>


Expected result:
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I expect to see two copies of the same text. The top copy is text rendered by the browser, the bottom copy is a gif file.

Actual result:
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The browser-rendered text displays correctly, the gif file is different and incorrect.