Get image size help

[newbtophp]

Im using getimagesize to detect the size of an avatar which is stored in a db. However getimagesize doesn't always seem to work (for e.g. if the image url's location is down) - it displays the following error, instead of the avator:

 

Warning: getimagesize(http://imageurl.com/img.png) [function.getimagesize]: failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in

 

Heres my code:

 

<?php

if(!empty($cmnt['user_avatar'])) {

list($avx, $avy) = getimagesize($cmnt['user_avatar']);

if(($avx + $avy) > 200) {

$avx = 80;

$avy = 80;

} 	

} else {
echo '<img src="../images/noavatar.gif" width="80" height="80" alt="No Avatar" />';
?>

 

Is their a way to resolve this issue, or perhaps echo a message instead of the warning displaying :/