Simple click tracking script

.htaccess

// .htaccess
//
// Add this to the directory where your write.php will be stored
// This is an easy way to do an HTTP request to the script with the data

<IfModule mod_rewrite.c>
	RewriteEngine On
	
	# Change the following to the base directory of this file
	RewriteBase /clickstats/

	# Allow any files or directories that exist to be displayed directly
	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteCond %{REQUEST_FILENAME} !-d

	# Rewrite all other URLs to write.php
	RewriteRule . /clickstats/write.php [L]
</IfModule>

clicks.js

// clicks.js
// 
// Load this script on the page where you want to collect stats

// Assign unique ids to all links on the page using a data element
// Set a click handler to fire every time a link is clicked
// It gathers the unique id of the clicked link and builds a URL to call

	var anchors = document.getElementsByTagName("a");
	for (var i = 0; i < anchors.length; i++) {
		anchors[i].setAttribute("data-click", i);
		anchors[i].onclick = function() {
			confirm(i);
			var hacky = document.createElement('iframe');
			hacky.setAttribute('id', 'hacky-hack');
			hacky.setAttribute('src', 'http://URL/clickstats/' + i);
			hacky.setAttribute('style', 'visibility:hidden;');
			document.body.appendChild(hacky);
		};
	}

write.php

// write.php
//
// This is the file that write to a database, or text file, or whatever.

<?php
header("Access-Control-Allow-Origin: *"); // Let's just be safe.

$navString = $_SERVER['REQUEST_URI']; // Returns "/clickstats/15/" or whatever. You want the "15"
$parts = explode('/', $navString); // Break into an array

// Change the number to reflect the piece of the array you want. You can scale this up to more fields.

$clicked = $parts[2]; // This is the position of the click

// Do something awesome with that number, like append it to a text file or write it to a database

?>