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 version of PHP. I’d like to incorporate a way for the end user to tell when I’ve updated the script.

Answer 1

To specify the second (more simple) solution phjr proposed:

Have a file version.txt on your own public server and include the following function into your deployed project/script:

define('REMOTE_VERSION', 'http://your.public.server/version.txt');  // this is the version of the deployed script define('VERSION', '1.0.1');  function isUpToDate() {     $remoteVersion=trim(file_get_contents(REMOTE_VERSION));     return version_compare(VERSION, $remoteVersion, 'ge'); } 

version.txt should just contain the most recent version number, e.g.:

1.0.2