I have to correct this line:

$user_data = "$user_data<tr><td><div>$show</div></td><td><div>$last, $
+first</div></td><td>$phone</td><td><div>$email</div></td></tr>";
[download]

with

$user_data = "$user_data<tr><td><div>$link</div></td><td><div>$last, $
+first</div></td><td>$phone</td><td><div>$email</div></td></tr>";
[download]

I would like to test all the data in "$user_data" to be unique.