MySQL, PHP and Random names.

[SP8600]

As you can see in the below code i need to upload images, now the problem is i need to change its name as it is being uploaded to a random number and then need to tell the new random file name what the extension will be (eg. gif or jpg) then i need to reset the thumbnail_name to the new name so that it is entered into the database correctly. Thanks for any help.

//Upload Images
$path = "$image_uploads";
$url_images = "image_url";
$max_size = 1000000;

//Upload Thumbnail
if (is_uploaded_file($thumbnail)) {

if ($thumbnail_size>$max_size) { echo "The file is too big<br>\n"; exit; }

if (($thumbnail_type=="image/gif") || ($thumbnail_type=="image/pjpeg")) {

if (file_exists($path . $thumbnail_name)) { echo "The file already exists<br>\n"; exit; }

$res = copy($thumbnail, $path . rand() % 9000000000000000000);
if (!$res) {
echo "upload failed!<br>\n"; exit; }
else
echo "upload sucessful<br>\n";

echo "File Name: $thumbnail_name<br>\n";
echo "File Size: $thumbnail_size bytes<br>\n";
echo "File Type: $thumbnail_type<br>\n";
} else { echo "Wrong file type<br>\n"; exit; }

}

[pdjohe]

Here is a function I use to generate random passwords. I imagine you could use something similar to generate random filenames.

#Generates a random password 
function generate_passwd($length = 50) {
	#all the chars we want to use (excluding 0,l,v, etc. and other confusing chars)
	$all = explode(" ",
		"a b c d e f g h j k m n p q r s t w x y z "
		."A B C D E F G H J K L M N P Q R S T W X Y Z "
		."2 3 4 5 6 7 8 9");
	 for ($i=0;$i<$length;$i++) {
		srand((double)microtime()*1000000);
		$randy = rand(0, 61);
		if ($all[$randy]!=" ") {
			$pass .= $all[$randy];
			if (strlen($pass)>5){
				return $pass;
				}
			}
		}
	}

[SP8600]

I dont think that will work because i need to tell the random file name what the extension will be and then update the $thumb_name to the new randomely produced number and also the extemsion.

Any one have any ideas how i could do this using the code i posted first.

[SP8600]

Ok i got a new idea, could some one please help me out with this coz i really need to get it done.

If i use this to produce the random file name and also use the orignal file name on the end of the random name is there anyway in which i can get the produced random number and put it in a VAR so that it can be entered into the database.

$res = copy($thumbnail, $path . rand() % 9000000000000000000 . $thumbnail_name);