<form action="index.php" method="POST" enctype="multipart/form-data">
Choose a file to upload: <input name="uploadedfile" type="file" />
<input type="submit" value="Upload File" name="uploadedfile" />
</form>

$imageinfo = getimagesize($_FILES['uploadedfile']['tmp_name']);
if($imageinfo['mime'] != 'image/gif' && $imageinfo['mime'] != 'image/gif') {
echo "Sorry, we only accepg GIF images";
exit;
}

; Maximum allowed size for uploaded files.
; http://php.net/upload-max-filesize
upload_max_filesize = 2000M