Question

Using Javascript (or Ajax) I want to connect to a page (a .php page) every 10 seconds. This will be done in user-side (browser) within a web page. Just, I’m trying to see the online users. I have about 1-2 visitors daily, in my personal web site.

Answer 1

Using jQuery‘s $.post() method:

setInterval(function(){
  $.post("getCount.php", function(result) {
    // do something with result
  }, "html");
}, 10000);

I’m assuming you have a good reason to query your own local script. If you want detailed information about who is visiting your site, when, and from what types of environments (machines, browsers, etc), I’d suggest you look into implementing something like Google Analytics.