Re: How would you create a tracking pixel?
| From: | Matt Darby | Date: | Mon, 25 Jul 2005 19:37:43 +0000 |
| Subject: | Re: How would you create a tracking pixel? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-219309@lists.php.net to get a copy of this message | ||
A blank (transparent) pixel would be more difficult, but a simple colored pixel would be easy:
In target file:
<img src=pixel.php>
pixel.php
<?
$im=imagecreate(1,1);
$white=imagecolorallocate($im,255,255,255);
imagesetpixel($im,1,1,$white);
header("content-type:image/jpg");
imagejpeg($im);
imagedestroy($im);
?>
I guess this begs the question, why not use session variables to track activity??
Matt Darby
Brian Dunning wrote:
I want to create a pixel that can be used to track certain activity on the site. I've got it working fine: I just mod_rewrite "spacer.gif" to a PHP app that does what I want it to do; but then I don't know how to actually return a blank pixel. Can anyone point me in the right direction?