I'm a developer for the website Friconix, a collection of free icons. Users can include our JS file on their web pages as explain here : https://friconix.com/start/.
I would like to gather statistics on clients using our tools. How to know, on server side, information on pages (URL or at least domains) that request our JS file ?
It's important to explain that, for decreasing the loading time, the JS file is not dynamically generated. There is no PHP file loaded every time the file is requested. The file is saved in plain text on our server. I wonder if the right solution is not to add something in the .htaccess file ?
Since the script is requested from your server every time a user loads a browser-page you can track who and how often that path is requested.
A simple approach is that it will be present in you request log files. So you can create a script and read your log files every so often.
A second approach is to setup a special rule/location in nginx/apache/which-ever-server-you-are-running
A third approach is to serve the script via CDN that has all these attributes built in (ie. CloudFront)