Anyone have a function to return the filename from a string? (parse_url wont work)

domain.com/file.jpg
file/file2/file.jpg
folder/file.jpg
http://www.site.com/file.jpg
http://www.site.com/domain/file.jpg
file.jpg

how can you return everything after the last /?

in this case, all strings would retrun file.jpg..

Something like this

$file = explode("/",$_SERVER[PHP_SELF]);
$name = count($file)-1;

echo $file[$name];