PHP sort multiple arrays - php

Question

I have a PHP report which goes out to an array of servers to get their uptime. Then present the uptime in a table. Very simple.
I'm looking to see how to sort this array so that the highest uptime is at the top of the list.
I know about arsort() but I don't know how to apply it to this statement because of the foreach building the table dynamically.
Here's my code:
$servers = server1,server2,server3
foreach ($servers as $srv) {
$output = array(); // Reset the $output array each time
exec("/root/get_report_uptime.sh $srv",$output,$retval);
echo "<tr>";
echo "<td><a href='http://$srv/' target='_blank'>$srv</a></td>";
echo "<td>$output[0] days</td>";
echo "</tr>";
}
$output[0] returns a number like "100". Looking to sort by $output[0] while keeping the $srv linked to it.

Answer 1

$days = array()
foreach ($servers as $srv) {
$output = array(); // Reset the $output array each time
exec("/root/get_report_uptime.sh $srv",$output,$retval);
$days[$srv] = $output[0];
}
arsort($days);
foreach($days as $srv => $day) {
echo "<tr>";
echo "<td><a href='http://".$srv."/' target='_blank'>".$srv."</a></td>";
echo "<td>".$day." days</td>";
echo "</tr>";
}