offset help next/prev link

[fris]

this piece of code reads my /videos directory which has about 1000 videos in it. and displays 20 at a time on a page then does next/prev links i did it without mysql database. just one line seems not to be working line 19. anyone can assist that would be awesome.

<?

  $MYFILENAME = "format.php"; 
  $FILESDIR = "/videos";
  $OFFSETNUM = 20; 


  $files = dir($FILESDIR); 

  if (isset($_REQUEST[offset]))  

  {  

    $offset = $_REQUEST[offset]; 
  } 
  else 
  { 
    $offset = 0; 
  } 

  for ($i=$offset; $i<=sizeof($files); $++)  

  { 
    echo "<a href='$files[$i]'>$files[$i]</a><br/>"; 
  } 

  if ( ($offset - 20) >= 0 ) {  $prevoffset = $offset - 20; } else { $offset = 0; } 
  if ( ($offset + 20) <= sizeof($files) ) { $nextoffset = $offset + 20; } 

  echo "<a href='$MYFILENAME?offset=$nextoffset'>prev 20</a> | "; 
  echo "<a href='$MYFILENAME?offset=$nextoffset'>next 20</a>"; 

?>

thanks.

[kevinsequeira]

for ($i=$offset; $i<=sizeof($files); $++)

should be

for ($i=$offset; $i<=sizeof($files); $i++)

the next time it would be helpfull if you let us know which is line 19 :p

reg
kevin