Hi reggie,
I believe you are printing out the $_SERVER['HTTP_USER_AGENT'] in the who/index.php
It may be easier for you to append this info into a file

To ensure only unique entries are added to the log file

if(!in_array($currentHeader, $fileContent)) {
file_put_contents($filename,$currentHeader,FILE_AP PEND)
}


~m~
Varghese