Posted by Hermann on 12/17/06 20:31

The PHP code I use is the following:
--------------------------------------------------------------------------------------------------
<?
$file=$_SERVER['QUERY_STRING'] ;
$fullFilePath=$_SERVER['DOCUMENT_ROOT'].$file ;
$fileModifiedTime=filemtime($fullFilePath) ;

if($_SERVER['HTTP_IF_MODIFIED_SINCE'])
{ $ifModifiedTime=strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'],0) ;
if($fileModifiedTime<=$ifModifiedTime)
{ header('HTTP/1.1 304 Not Modified') ;
exit ;
}
}
--------------------------------------------------------------------------------------------------

There is no closing php tag "?>", meaning that not a single byte is
sent to the client.
So I really dont know why are those few bytes being sent after the
headers.
They are just trash, just senseless 1s and 0s. They are always the same
4 bytes.

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