Неправильный переход на последнюю страницу

P = 1 + floor( N / n )

P1 = 1 + floor( (N - m) / (n - m) )

58 сообщений, 3 прикрепленных, 15 сообщений на странице
N = 58, m = 3, n = 15

P = 1 + floor( N / n ) = 1 + floor( 58 / 15 ) = 1 + floor( 3,866666666666667 ) = 1 + 3 = 4

P1 = 1 + floor( (N - m) / (n - m) ) = 1 + floor( (58 - 3) / (15 - 3) ) =
= 1 + floor( 55 / 13 ) = 1 + floor( 4,230769230769231 ) = 1 + 4 = 5

ceil($totalposts/intval($fm->user['posts2page']))

[pinmsg] => Array // массив прикрепленных к верху сообщений в порядке вывода

m = count( $pinmsg );

$totalpages = ceil($totalposts/intval($fm->user['posts2page']));

if ($totalposts > $fm->user['posts2page'])
{
$threads = $fm->_Read('forum'.$forum_id.'/'.$topic_id.'-thd.php',FALSE);
$threads_keys = array_keys($threads);
$f_thread = $threads [$threads_keys[0]];
$pinmsg = (isset($f_thread['pinmsg'])) ? count( $f_thread['pinmsg'] ) : 0 ;
$totalpages = 1 + floor(($totalposts-$pinmsg)/(intval($fm->user['posts2page'])-$pinmsg));
}
else {$totalpages = ceil($totalposts/intval($fm->user['posts2page']));}