Show if image exists

[Iryk]

[code]<?
$color = poop;
$species = aisha;
$url = "http://images.neopets.com/pets/".$species."_".$color."_baby.gif";
if(!is_readable($url)) {
$size = getimagesize("$url");
$width = $size[0];
if($width == "150") {
echo "<img src='$url'>";
}
}
?>[/code]

Error:
[i]Warning: getimagesize(http://images.neopets.com/pets/aisha_poop_baby.gif) [function.getimagesize]: failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /fpgs/fpgshttpd/majestic-neo/pet_db/pets.php on line 6[/i]

I want the script to find out if the image really does exist then if it does it will show the image. But if the image doesn't exist then it will show nothing. Xould someone please tell me what I am doing wrong.

[acey99]

cause getimagesize doesn't use http protocol, it uses folder strucure:

eg:

c:\path\to\image\ (Windows)
or /path/to/image (Nix)