explode uptime

[cubalibre810]

<?php


$uptime = "16:47:06 up 30 days, 22:53, 0 users, load average: 2.51, 1.82, 1.47";

preg_match_all('#[0-9]{1}\.[0-9]{2}#', $uptime, $cpu);

print_r($cpu[0]);

?>

EDIT: il pattern me lo ha modificato il forum, sarebbe così "#[0-9]{1}\.[0-9]{2}#"