Server Updatime basic

<html>
<head>
<title>Your title</title>
</head>
<body>
<div>The current uptime of "hostname/domain here" (IP here) is:</div>
<?php
 $buh = strtok( exec( "cat /proc/uptime" ), "." );
 $days = sprintf( "%2d", ($buh/(3600*24)) );
 $hours = sprintf( "%2d", ( ($buh % (3600*24)) / 3600) );
 $min = sprintf( "%2d", ($buh % (3600*24) % 3600)/60 );
 $sec = sprintf( "%2d", ($buh % (3600*24) % 3600)%60 );

echo "$days days, $hours hours, $min minutes, $sec seconds";
?>
<p></p>
<?php
$hst = $_SERVER["HTTP_HOST"];
$uri = $_SERVER["REQUEST_URI"];
$rmt = $_SERVER["REMOTE_ADDR"];
$br = $_SERVER["HTTP_USER_AGENT"];
echo "Your IP address reflects as : $rmt \n<br>\n The page you requested was: $uri \n<br>\n The browser you are using is $br";
?>
<p></p>
<div>PHP Info: <a href="path to your phpinfo file ">phpinfo</a></div>
</body>
</html>