Opening a PHP file from a one pixel image

frankm

Hi-

Does anyone know how I can place a small one pixel image on a page that would open a PHP file?

I have a PHP file that helps track referers to my websites.

I would like to be able to include the small image on a number of different sites, that would then activate the page.php file which would exist at a different domain.

Is that possible? Does anyone know how it can be done?

Thanks in advance for any ideas.

-Frank

pyfsapple

It is possible but I have not try yet......

To do this, there may be some codes like:

$filePath = "http://domain.com";
$pPicPath1 = "file.gif";

echo "<IMG SRC=\"$filePath/$pPicPath1\" ALT=\"$pPicPath1\"  WIDTH=100 HEIGHT=100>";

You may notice that this is jsut directly...

Nick_Whymark

Just a guess, but assuming you just want to run your php script when the html page is loaded, couldn't you have an a small in-line frame (IFrame) which contains your PHP script in it ?

Other than that you could use javascript to link to your script on first load maybe.

Can't think how you'd do it with an image without the user having to click onto it !?

jnuneznyc

I believe is function is called WebBugs. Yahoo and numerous other sites use this method so they may track a user on an affiliate's site.

Ok, here is one way of doing this.

First the image tag will be as follows:

<img src="http://www.domain.com/image.php">

Create a PHP page on your server called "image.php" and have the image "1by1.gif" you would like to pass thru to the browser within the same directory as "image.php"

<?php
    //Do all of your calculations or data mining here
    header('Content-type: image/gif');
    readfile('1by1.gif');
?>

Thats it!

NOTE: Trying to setcookie might fail on certain browsers(Konqueror and Apple's Safari) Since it has an option to deny Cookies from outside the current page's domain. While this works for most sites, I found it causes problems on sites like Dell.

frankm

Thanks very much! I'll try this and let you know how it works.

--Frank