note 52217 added to function.virtual

When I set php_flag 'zlib.output_compression' on in .htaccess file I see empty page if script contains virtual() calls. How can I compress page in this case? ---- Manual Page -- http://www.php.net/manual/en/function.virtual.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+52217 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+52217&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+52217&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+52217&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+52217&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+52217&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+52217&report=yes Search -- http://master.php.net/manage/user-notes.php