\n"; $lastfile = file_get_contents("last"); echo "Gallery
"; echo "\n"; $imgnum = $_GET["num"]; if(!is_numeric($imgnum)) { $imgnum = $lastfile; } if(file_exists("$imgnum.mp4")) { echo "
\n"; } else { echo "
\n"; } $nextnum = $imgnum + 1; $prevnum = $imgnum - 1; if(file_exists("$prevnum.jpg")) { echo "previous \n"; } echo "this \n"; if(file_exists("$nextnum.jpg")) { echo "next
\n"; } echo "\n"; echo "\n"; ?>