upload thingy

[benson]

Hi all,

I have managed to make an upload script.
But when i run the script it does not give's an var an value and it does not upload the image.
But along with that i want to change the code so that it only can upload images, i know how to do this but where do i have to put it ??

$check = strToLower($_FILES["foto"]["name"]); 
if(eregi("(jpg|jpeg|gif|png)$", $check))

The code:

if ($_FILES['foto']['name'] != "")
	{
	$ext = explode(".", $_FILES['foto']['name']);
	$mix = $onderwerp.$nick;
	$filehash=md5($mix);
	$_FILES['foto']['name'] = substr($filehash, 0, 15).".".$ext[1];
	$tmpfile = "plaatjes/".$_FILES['foto']['name'];
	$size = $_FILES['foto']['size'];
	if($size <= "200000")
		{
		if(!file_exists($tmpfile))
			{
			move_uploaded_file($_FILES['foto']['tmp_name'], $tmpfile);
			chmod($tmpfile, 0755);
			$fotopad = $tmpfile;
			}
		else
			{
			$_FILES['foto']['name'] = substr($filehash, 5, 20).".".$ext[1];
			move_uploaded_file($_FILES['foto']['tmp_name'], $tmpfile);
			chmod($tmpfile, 0755);
			$fotopad = $tmpfile;
			}
		echo 'Het plaatje is opgeslagen.<br>';
		}
	else
		{
		Echo "Je plaatje is te groot: ".$size."/200000 Bytes</font>";
		}
	}