PHP Script Version Checking/Notification

Question

How can I check the version of my script against an online file to see if it\'s the latest version?

For clarification, I\'m talking about a script I wrote, not the v

Answer 1

define('REMOTE_VERSION', 'http://your.public.server/version.txt');
define('VERSION', '1.0.1');
$script = file_get_contents(REMOTE_VERSION);
$version = VERSION;
if($version == $script) {
    echo "
 
You have the latest version!
 
";
} else {
    echo "
 
There is a update available!
 
";
}