[SOLVED] Check for a 404 error?

[papaface]

Hello,

How can I check if a remote link returns a 404 error?

I understand it has something to do with headers but I'm not entirely sure.

 

Any help would be appreciated!

[papaface]

I have this:

<?php
$url = "http://video.stage6.com/1957687/.divx";

$valid = fsockopen("$url", 80, $errno, $errstr, 30);

if	($valid)
echo "active";
else
echo "dead";
?>

I'm trying to test whether or not a link is still active or not.

The code above doesn't work because that link forces a download.

A unactive link shows a 404 error on the page.