PHP kôd:
function file_type($file){
$path_chunks = explode("/", $file);
$thefile = $path_chunks[count($path_chunks) - 1];
$dotpos = strrpos($thefile, ".");
return substr($thefile, $dotpos + 1);
}
if (file_type($_image) == "gif") {
$image = imagecreatefromgif($_image);
} else if (file_type($_image) == "jpeg" || file_type($_image) == "jpg") {
$image = imagecreatefromjpeg($_image);
}