This program captures a screenshot, upload, and copy uri to your clipboard.
scrshot.php example:
<?php
ini_set('display_errors', '1');
$uploadpath = "/home/dlunch/public_html/scrshot/";
$uploadfile = $uploadpath.basename($_FILES['file']['name']);
if(strtolower(substr($_FILES['file']['name'], -3)) != 'png' && strtolower(substr($_FILES['file']['name'], -3)) != 'jpg')
return;
move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile);
echo "http://dlunch.net/scrshot/".basename($_FILES['file']['name']);
?>