note 51391 added to function.pdf-get-value

This is my code: foreach(glob("printable/*.pdf") as $filename){ $pdftitle=pdf_get_parameter($filename,"TITLE"); echo "<a href='$filename'>$pdftitle</a><br />"; } This is my error message: Warning: pdf_get_parameter(): supplied argument is not a valid pdf object resource I can't find the appropriate resource in the PHP manual to extract the Title of the PDF files. I have PHP 4.3 installed. Thanks, Chris ---- Manual Page -- http://www.php.net/manual/en/function.pdf-get-value.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+51391 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+51391&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+51391&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+51391&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+51391&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+51391&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+51391&report=yes Search -- http://master.php.net/manage/user-notes.php