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to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php

If you can provide more information, feel free to add it
to this bug and change the status back to "Open".

To better explain, here is an example source:

<?
$xml = <<< END
<?xml version="1.0" encoding="ISO-8859-2"?>
<ROOT>
<IMPORTANT>Very important ? ? ? </IMPORTANT>
</ROOT>
END;

$xsl = <<<END
<?xml version="1.0" encoding="ISO-8859-2"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>
<xsl:template match="ROOT">
  <B><xsl:value-of select="IMPORTANT"/></B>
</xsl:template>
</xsl:stylesheet>
END;

$arguments = array('/_xml' => $xml,'/_xsl' => $xsl);
$xh = xslt_create();
$result = xslt_process($xh, 'arg:/_xml', 'arg:/_xsl', NULL, $arguments);
echo $result;
?>

And, I think, the good result is: <B>Very important ? ? ?</B>
But I always get: <B>Very important ö ü é</B>

And I tried it with the command line version of php, and the result is the same.

This looks like an encoding problem.

Use <xsl:output method="html" encoding="utf-8"/>
or header("Content-type: text/html; charset=utf-8"); to give the right encoding to your browser. This works for me.

Processing output direct with sabcmd from your xml and xsl documents show the same as described from you. So I think, that's a sablotron problem and not a PHP bug. Feel free to reopen, if my tip doesn't work for you.

Regards, Kai