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Posted by Matt Darby on 07/25/05 22:37
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?
>
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