Webビーコン Sample

api_read.js

(function() {
    var action_target = document.createElement('img');
    action_target.width = 1;
    action_target.height = 1;
    action_target.alt = "";
    action_target.src = '/api/action';
    document.body.appendChild(action_target);
    console.log("action");
})();

onePixelGif.php

<?php
// using laravel
class ActionController extends BaseController
{
	public function getIndex()
	{
		$expires = gmdate('r', time('1970-01-01 00:00:00'));
		$headers = [
			'Cache-Control' => 'private, no-cache, must-revalidate',
			'Expires' => $expires,
			'Pragma' => 'no-cache',
			'Content-Length' => 1,
			'Content-Type' => 'image/gif'
		];

		$onePixelGif = base64_decode("R0lGODlhAQABAIAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw%3D%3D");

		return Response::make($onePixelGif, 200, $headers);
	}
}