Filetest with isset() ?????

[Anon]

I try to test if a remote file exists or not with this code, but I get an errormessage. Can someone help please?

<?php
$file = \"URL\";
if (isset($file)) {
echo $file;
} else {
echo $file .\" dos not exists.\";
}
?>

[[deleted]]

Tried looking at the manual lately?

isset is used to check that a var is set.